68530256 has 20 divisors (see below), whose sum is σ = 133048404. Its totient is φ = 34195200.

The previous prime is 68530249. The next prime is 68530291. The reversal of 68530256 is 65203586.

It can be written as a sum of positive squares in 2 ways, for example, as 45104656 + 23425600 = 6716^2 + 4840^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4226 + ... + 12446.

Almost surely, 2^68530256 is an apocalyptic number.

It is an amenable number.

68530256 is a deficient number, since it is larger than the sum of its proper divisors (64518148).

68530256 is a wasteful number, since it uses less digits than its factorization.

68530256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8750 (or 8744 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 68530256 is about 8278.3003086382. The cubic root of 68530256 is about 409.2237065856.

It can be divided in two parts, 68530 and 256, that added together give a palindrome (68786).

The spelling of 68530256 in words is "sixty-eight million, five hundred thirty thousand, two hundred fifty-six".