720925812 has 48 divisors (see below), whose sum is σ = 1874550720. Its totient is φ = 239603616.

The previous prime is 720925789. The next prime is 720925867. The reversal of 720925812 is 218529027.

720925812 is a `hidden beast` number, since 72 + 0 + 9 + 2 + 581 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27858 + ... + 47094.

It is an arithmetic number, because the mean of its divisors is an integer number (39053140).

Almost surely, 2^720925812 is an apocalyptic number.

It is an amenable number.

720925812 is an abundant number, since it is smaller than the sum of its proper divisors (1153624908).

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

720925812 is a wasteful number, since it uses less digits than its factorization.

720925812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19597 (or 19589 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 720925812 is about 26850.0616759068. The cubic root of 720925812 is about 896.6649457241.

The spelling of 720925812 in words is "seven hundred twenty million, nine hundred twenty-five thousand, eight hundred twelve".