616656612 has 48 divisors (see below), whose sum is σ = 1690420032. Its totient is φ = 172490880.

The previous prime is 616656587. The next prime is 616656631. The reversal of 616656612 is 216656616.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177963 + ... + 181394.

It is an arithmetic number, because the mean of its divisors is an integer number (35217084).

Almost surely, 2^616656612 is an apocalyptic number.

It is an amenable number.

616656612 is an abundant number, since it is smaller than the sum of its proper divisors (1073763420).

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

616656612 is a wasteful number, since it uses less digits than its factorization.

616656612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359388 (or 359386 counting only the distinct ones).

The product of its digits is 77760, while the sum is 39.

The square root of 616656612 is about 24832.5715945812. The cubic root of 616656612 is about 851.1663858135.

The spelling of 616656612 in words is "six hundred sixteen million, six hundred fifty-six thousand, six hundred twelve".