716565520 has 40 divisors (see below), whose sum is σ = 1817472960. Its totient is φ = 260568960.

The previous prime is 716565491. The next prime is 716565533. The reversal of 716565520 is 25565617.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×716565520² = 1026932288905740800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 716565520.

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, 406260 + ... + 408019.

It is an arithmetic number, because the mean of its divisors is an integer number (45436824).

Almost surely, 2^716565520 is an apocalyptic number.

It is an amenable number.

716565520 is an abundant number, since it is smaller than the sum of its proper divisors (1100907440).

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

716565520 is a wasteful number, since it uses less digits than its factorization.

716565520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814303 (or 814297 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 37.

The square root of 716565520 is about 26768.7414720976. The cubic root of 716565520 is about 894.8535573888.

The spelling of 716565520 in words is "seven hundred sixteen million, five hundred sixty-five thousand, five hundred twenty".