616720716 has 30 divisors (see below), whose sum is σ = 1612230620. Its totient is φ = 205573464.

The previous prime is 616720711. The next prime is 616720721. The reversal of 616720716 is 617027616.

616720716 is a `hidden beast` number, since 616 + 7 + 20 + 7 + 16 = 666.

It is an interprime number because it is at equal distance from previous prime (616720711) and next prime (616720721).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (616720711) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 951406 + ... + 952053.

Almost surely, 2^616720716 is an apocalyptic number.

It is an amenable number.

616720716 is an abundant number, since it is smaller than the sum of its proper divisors (995509904).

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

616720716 is a wasteful number, since it uses less digits than its factorization.

616720716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1903475 (or 1903464 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 616720716 is about 24833.8622851944. The cubic root of 616720716 is about 851.1958788778.

The spelling of 616720716 in words is "six hundred sixteen million, seven hundred twenty thousand, seven hundred sixteen".