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68985954 = 23229132157
BaseRepresentation
bin1000001110010…
…10010001100010
311210210211221100
410013022101202
5120130022304
610502335230
71465241142
oct407122142
9153724840
1068985954
1135a39194
121b12a516
13113a50bb
14923a922
1560ca439
hex41ca462

68985954 has 24 divisors (see below), whose sum is σ = 154624860. Its totient is φ = 22202208.

The previous prime is 68985923. The next prime is 68985967. The reversal of 68985954 is 45958986.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 68807025 + 178929 = 8295^2 + 423^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68985954.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 65557 + ... + 66600.

Almost surely, 268985954 is an apocalyptic number.

68985954 is an abundant number, since it is smaller than the sum of its proper divisors (85638906).

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

68985954 is a wasteful number, since it uses less digits than its factorization.

68985954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132194 (or 132191 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 54.

The square root of 68985954 is about 8305.7783500404. The cubic root of 68985954 is about 410.1287598762.

The spelling of 68985954 in words is "sixty-eight million, nine hundred eighty-five thousand, nine hundred fifty-four".

Divisors: 1 2 3 6 9 18 29 58 87 174 261 522 132157 264314 396471 792942 1189413 2378826 3832553 7665106 11497659 22995318 34492977 68985954