720416720 has 40 divisors (see below), whose sum is σ = 1678392576. Its totient is φ = 287577728.

The previous prime is 720416717. The next prime is 720416731. The reversal of 720416720 is 27614027.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31289 + ... + 49191.

Almost surely, 2^720416720 is an apocalyptic number.

It is an amenable number.

720416720 is an abundant number, since it is smaller than the sum of its proper divisors (957975856).

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

720416720 is a wasteful number, since it uses less digits than its factorization.

720416720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18419 (or 18413 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 720416720 is about 26840.5797254828. The cubic root of 720416720 is about 896.4538317942.

The spelling of 720416720 in words is "seven hundred twenty million, four hundred sixteen thousand, seven hundred twenty".