716572657 has 4 divisors (see below), whose sum is σ = 739687936. Its totient is φ = 693457380.

The previous prime is 716572603. The next prime is 716572699. The reversal of 716572657 is 756275617.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 716572657 - 2⁷ = 716572529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (716572357) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11557593 + ... + 11557654.

It is an arithmetic number, because the mean of its divisors is an integer number (184921984).

Almost surely, 2^716572657 is an apocalyptic number.

It is an amenable number.

716572657 is a deficient number, since it is larger than the sum of its proper divisors (23115279).

716572657 is a wasteful number, since it uses less digits than its factorization.

716572657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23115278.

The product of its digits is 617400, while the sum is 46.

The square root of 716572657 is about 26768.8747802368. The cubic root of 716572657 is about 894.8565282959.

The spelling of 716572657 in words is "seven hundred sixteen million, five hundred seventy-two thousand, six hundred fifty-seven".