68522656 has 12 divisors (see below), whose sum is σ = 134904042. Its totient is φ = 34261312.

The previous prime is 68522651. The next prime is 68522677. The reversal of 68522656 is 65622586.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 44355600 + 24167056 = 6660^2 + 4916^2 .

It is not an unprimeable number, because it can be changed into a prime (68522651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070635 + ... + 1070698.

Almost surely, 2^68522656 is an apocalyptic number.

It is an amenable number.

68522656 is a deficient number, since it is larger than the sum of its proper divisors (66381386).

68522656 is a wasteful number, since it uses less digits than its factorization.

68522656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141343 (or 2141335 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

The square root of 68522656 is about 8277.8412644844. The cubic root of 68522656 is about 409.2085784007.

The spelling of 68522656 in words is "sixty-eight million, five hundred twenty-two thousand, six hundred fifty-six".