720172984 has 8 divisors (see below), whose sum is σ = 1350324360. Its totient is φ = 360086488.

The previous prime is 720172909. The next prime is 720173009. The reversal of 720172984 is 489271027.

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 45010804 + ... + 45010819.

It is an arithmetic number, because the mean of its divisors is an integer number (168790545).

Almost surely, 2^720172984 is an apocalyptic number.

It is an amenable number.

720172984 is a deficient number, since it is larger than the sum of its proper divisors (630151376).

720172984 is a wasteful number, since it uses less digits than its factorization.

720172984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90021629 (or 90021625 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 720172984 is about 26836.0389029380. The cubic root of 720172984 is about 896.3527223896.

The spelling of 720172984 in words is "seven hundred twenty million, one hundred seventy-two thousand, nine hundred eighty-four".