68940956 has 24 divisors (see below), whose sum is σ = 139176576. Its totient is φ = 29268720.

The previous prime is 68940947. The next prime is 68941007. The reversal of 68940956 is 65904986.

It is a self number, because there is not a number n which added to its sum of digits gives 68940956.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8510 + ... + 14501.

It is an arithmetic number, because the mean of its divisors is an integer number (5799024).

Almost surely, 2^68940956 is an apocalyptic number.

It is an amenable number.

68940956 is an abundant number, since it is smaller than the sum of its proper divisors (70235620).

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

68940956 is a wasteful number, since it uses less digits than its factorization.

68940956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23129 (or 23127 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 68940956 is about 8303.0690711327. The cubic root of 68940956 is about 410.0395678648.

It can be divided in two parts, 68940 and 956, that added together give a palindrome (69896).

The spelling of 68940956 in words is "sixty-eight million, nine hundred forty thousand, nine hundred fifty-six".