68656976 has 10 divisors (see below), whose sum is σ = 133022922. Its totient is φ = 34328480.

The previous prime is 68656957. The next prime is 68656993. The reversal of 68656976 is 67965686.

It can be written as a sum of positive squares in only one way, i.e., 46566976 + 22090000 = 6824^2 + 4700^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2145515 + ... + 2145546.

Almost surely, 2^68656976 is an apocalyptic number.

It is an amenable number.

68656976 is a deficient number, since it is larger than the sum of its proper divisors (64365946).

68656976 is a wasteful number, since it uses less digits than its factorization.

68656976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4291069 (or 4291063 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 53.

The square root of 68656976 is about 8285.9505187999. The cubic root of 68656976 is about 409.4757845286.

The spelling of 68656976 in words is "sixty-eight million, six hundred fifty-six thousand, nine hundred seventy-six".