720511516 has 12 divisors (see below), whose sum is σ = 1267940520. Its totient is φ = 358242800.

The previous prime is 720511507. The next prime is 720511523. The reversal of 720511516 is 615115027.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 502435 + ... + 503866.

It is an arithmetic number, because the mean of its divisors is an integer number (105661710).

Almost surely, 2^720511516 is an apocalyptic number.

It is an amenable number.

720511516 is a deficient number, since it is larger than the sum of its proper divisors (547429004).

720511516 is a wasteful number, since it uses less digits than its factorization.

720511516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1006484 (or 1006482 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 28.

The square root of 720511516 is about 26842.3455756012. The cubic root of 720511516 is about 896.4931500147.

It can be divided in two parts, 7205 and 11516, that added together give a triangular number (18721 = T₁₉₃).

The spelling of 720511516 in words is "seven hundred twenty million, five hundred eleven thousand, five hundred sixteen".