720762772 has 24 divisors (see below), whose sum is σ = 1305061632. Its totient is φ = 347942400.

The previous prime is 720762769. The next prime is 720762793. The reversal of 720762772 is 277267027.

It is a super-2 number, since 2×720762772² = 1038997947002247968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48372 + ... + 61492.

It is an arithmetic number, because the mean of its divisors is an integer number (54377568).

Almost surely, 2^720762772 is an apocalyptic number.

It is an amenable number.

720762772 is a deficient number, since it is larger than the sum of its proper divisors (584298860).

720762772 is a wasteful number, since it uses less digits than its factorization.

720762772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13599 (or 13597 counting only the distinct ones).

The product of its (nonzero) digits is 115248, while the sum is 40.

The square root of 720762772 is about 26847.0253845747. The cubic root of 720762772 is about 896.5973459460.

The spelling of 720762772 in words is "seven hundred twenty million, seven hundred sixty-two thousand, seven hundred seventy-two".