68040756 has 48 divisors (see below), whose sum is σ = 201604480. Its totient is φ = 19440000.

The previous prime is 68040737. The next prime is 68040773. The reversal of 68040756 is 65704086.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 68040756.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44245 + ... + 45756.

Almost surely, 2^68040756 is an apocalyptic number.

It is an amenable number.

68040756 is an abundant number, since it is smaller than the sum of its proper divisors (133563724).

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

68040756 is a wasteful number, since it uses less digits than its factorization.

68040756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90021 (or 90013 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 68040756 is about 8248.6820765502. The cubic root of 68040756 is about 408.2470389721.

The spelling of 68040756 in words is "sixty-eight million, forty thousand, seven hundred fifty-six".