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68581070 = 2519360953
BaseRepresentation
bin1000001011001…
…11011011001110
311210001021112122
410011213123032
5120024043240
610445532542
71461633545
oct405473316
9153037478
1068581070
1135791a78
121ab74152
1311292a1c
14917315c
15604a4b5
hex41676ce

68581070 has 16 divisors (see below), whose sum is σ = 129943440. Its totient is φ = 25988544.

The previous prime is 68581061. The next prime is 68581103. The reversal of 68581070 is 7018586.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 68581070.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180287 + ... + 180666.

It is an arithmetic number, because the mean of its divisors is an integer number (8121465).

Almost surely, 268581070 is an apocalyptic number.

68581070 is a deficient number, since it is larger than the sum of its proper divisors (61362370).

68581070 is a wasteful number, since it uses less digits than its factorization.

68581070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360979.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 68581070 is about 8281.3688482038. The cubic root of 68581070 is about 409.3248256981.

The spelling of 68581070 in words is "sixty-eight million, five hundred eighty-one thousand, seventy".

Divisors: 1 2 5 10 19 38 95 190 360953 721906 1804765 3609530 6858107 13716214 34290535 68581070