720578616 has 16 divisors (see below), whose sum is σ = 1801446600. Its totient is φ = 240192864.

The previous prime is 720578611. The next prime is 720578647. The reversal of 720578616 is 616875027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720578611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15012031 + ... + 15012078.

Almost surely, 2^720578616 is an apocalyptic number.

It is an amenable number.

720578616 is an abundant number, since it is smaller than the sum of its proper divisors (1080867984).

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

720578616 is a wasteful number, since it uses less digits than its factorization.

720578616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30024118 (or 30024114 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 720578616 is about 26843.5954372733. The cubic root of 720578616 is about 896.5209787733.

The spelling of 720578616 in words is "seven hundred twenty million, five hundred seventy-eight thousand, six hundred sixteen".