720542616 has 32 divisors (see below), whose sum is σ = 1804545600. Its totient is φ = 239755680.

The previous prime is 720542587. The next prime is 720542623. The reversal of 720542616 is 616245027.

It is a super-2 number, since 2×720542616² = 1038363322944246912, which contains 22 as substring.

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, 12586 + ... + 39993.

It is an arithmetic number, because the mean of its divisors is an integer number (56392050).

Almost surely, 2^720542616 is an apocalyptic number.

It is an amenable number.

720542616 is an abundant number, since it is smaller than the sum of its proper divisors (1084002984).

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

720542616 is a wasteful number, since it uses less digits than its factorization.

720542616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53159 (or 53155 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 720542616 is about 26842.9248778891. The cubic root of 720542616 is about 896.5060485066.

The spelling of 720542616 in words is "seven hundred twenty million, five hundred forty-two thousand, six hundred sixteen".