68715790 has 64 divisors (see below), whose sum is σ = 150413760. Its totient is φ = 22256640.

The previous prime is 68715733. The next prime is 68715869. The reversal of 68715790 is 9751786.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40642 + ... + 42298.

It is an arithmetic number, because the mean of its divisors is an integer number (2350215).

Almost surely, 2^68715790 is an apocalyptic number.

68715790 is an abundant number, since it is smaller than the sum of its proper divisors (81697970).

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

68715790 is a wasteful number, since it uses less digits than its factorization.

68715790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1717.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 68715790 is about 8289.4987785752. The cubic root of 68715790 is about 409.5926749827.

The spelling of 68715790 in words is "sixty-eight million, seven hundred fifteen thousand, seven hundred ninety".