715370721 has 16 divisors (see below), whose sum is σ = 1027703040. Its totient is φ = 440012160.

The previous prime is 715370701. The next prime is 715370723. The reversal of 715370721 is 127073517.

It is not a de Polignac number, because 715370721 - 2⁹ = 715370209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (715370723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118701 + ... + 124581.

It is an arithmetic number, because the mean of its divisors is an integer number (64231440).

Almost surely, 2^715370721 is an apocalyptic number.

It is an amenable number.

715370721 is a deficient number, since it is larger than the sum of its proper divisors (312332319).

715370721 is a wasteful number, since it uses less digits than its factorization.

715370721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9016.

The product of its (nonzero) digits is 10290, while the sum is 33.

The square root of 715370721 is about 26746.4151055800. The cubic root of 715370721 is about 894.3559220713.

The spelling of 715370721 in words is "seven hundred fifteen million, three hundred seventy thousand, seven hundred twenty-one".