616660072 has 16 divisors (see below), whose sum is σ = 1321414560. Its totient is φ = 264282864.

The previous prime is 616660039. The next prime is 616660081. The reversal of 616660072 is 270066616.

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, 5505838 + ... + 5505949.

It is an arithmetic number, because the mean of its divisors is an integer number (82588410).

Almost surely, 2^616660072 is an apocalyptic number.

It is an amenable number.

616660072 is an abundant number, since it is smaller than the sum of its proper divisors (704754488).

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

616660072 is a wasteful number, since it uses less digits than its factorization.

616660072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11011800 (or 11011796 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 616660072 is about 24832.6412610499. The cubic root of 616660072 is about 851.1679777476.

The spelling of 616660072 in words is "six hundred sixteen million, six hundred sixty thousand, seventy-two".