616168656 has 30 divisors (see below), whose sum is σ = 1724416850. Its totient is φ = 205389504.

The previous prime is 616168633. The next prime is 616168661. The reversal of 616168656 is 656861616.

It can be written as a sum of positive squares in only one way, i.e., 567392400 + 48776256 = 23820^2 + 6984^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2139331 + ... + 2139618.

Almost surely, 2^616168656 is an apocalyptic number.

It is an amenable number.

616168656 is an abundant number, since it is smaller than the sum of its proper divisors (1108248194).

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

616168656 is a wasteful number, since it uses less digits than its factorization.

616168656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4278963 (or 4278954 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 616168656 is about 24822.7447313950. The cubic root of 616168656 is about 850.9418192639.

The spelling of 616168656 in words is "six hundred sixteen million, one hundred sixty-eight thousand, six hundred fifty-six".