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70686 = 23371117
BaseRepresentation
bin10001010000011110
310120222000
4101100132
54230221
61303130
7413040
oct212036
9116860
1070686
1149120
1234aa6
1326235
141ba90
1515e26
hex1141e

70686 has 64 divisors (see below), whose sum is σ = 207360. Its totient is φ = 17280.

The previous prime is 70667. The next prime is 70687. The reversal of 70686 is 68607.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4150 + ... + 4166.

It is an arithmetic number, because the mean of its divisors is an integer number (3240).

270686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103680).

70686 is an abundant number, since it is smaller than the sum of its proper divisors (136674).

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

70686 is a wasteful number, since it uses less digits than its factorization.

70686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 70686 is about 265.8683884933. The cubic root of 70686 is about 41.3470442431.

The spelling of 70686 in words is "seventy thousand, six hundred eighty-six".

Divisors: 1 2 3 6 7 9 11 14 17 18 21 22 27 33 34 42 51 54 63 66 77 99 102 119 126 153 154 187 189 198 231 238 297 306 357 374 378 459 462 561 594 693 714 918 1071 1122 1309 1386 1683 2079 2142 2618 3213 3366 3927 4158 5049 6426 7854 10098 11781 23562 35343 70686