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195665064 = 2337612313
BaseRepresentation
bin10111010100110…
…01110010101000
3111122011211000020
423222121302220
5400042240224
631225440440
74564061040
oct1352316250
9448154006
10195665064
11a04a2071
1255640120
13316ca15a
141bdb4720
151229ec79
hexba99ca8

195665064 has 96 divisors (see below), whose sum is σ = 570173760. Its totient is φ = 54812160.

The previous prime is 195665047. The next prime is 195665081. The reversal of 195665064 is 460566591.

195665064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (195665047) and next prime (195665081).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 624972 + ... + 625284.

It is an arithmetic number, because the mean of its divisors is an integer number (5939310).

Almost surely, 2195665064 is an apocalyptic number.

195665064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 195665064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285086880).

195665064 is an abundant number, since it is smaller than the sum of its proper divisors (374508696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

195665064 is a wasteful number, since it uses less digits than its factorization.

195665064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 386 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 195665064 is about 13988.0328852916. The cubic root of 195665064 is about 580.5475052022.

The spelling of 195665064 in words is "one hundred ninety-five million, six hundred sixty-five thousand, sixty-four".

Divisors: 1 2 3 4 6 7 8 12 14 21 24 28 42 56 61 84 122 168 183 244 313 366 427 488 626 732 854 939 1252 1281 1464 1708 1878 2191 2504 2562 3416 3721 3756 4382 5124 6573 7442 7512 8764 10248 11163 13146 14884 17528 19093 22326 26047 26292 29768 38186 44652 52094 52584 57279 76372 78141 89304 104188 114558 133651 152744 156282 208376 229116 267302 312564 400953 458232 534604 625128 801906 1069208 1164673 1603812 2329346 3207624 3494019 4658692 6988038 8152711 9317384 13976076 16305422 24458133 27952152 32610844 48916266 65221688 97832532 195665064