720492964 has 9 divisors (see below), whose sum is σ = 1260956641. Its totient is φ = 360219640.

The previous prime is 720492919. The next prime is 720492989. The reversal of 720492964 is 469294027.

The square root of 720492964 is 26842.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 679019364 + 41473600 = 26058^2 + 6440^2 .

It is a super-2 number, since 2×720492964² = 1038220222347010592, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 720492964.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 46974 + ... + 60394.

Almost surely, 2^720492964 is an apocalyptic number.

720492964 is the 26842-nd square number.

It is an amenable number.

720492964 is a deficient number, since it is larger than the sum of its proper divisors (540463677).

720492964 is an frugal number, since it uses more digits than its factorization.

720492964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26846 (or 13423 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 43.

The cubic root of 720492964 is about 896.4854555351.

The spelling of 720492964 in words is "seven hundred twenty million, four hundred ninety-two thousand, nine hundred sixty-four".