616397166 has 72 divisors (see below), whose sum is σ = 1694832984. Its totient is φ = 160100640.

The previous prime is 616397153. The next prime is 616397189. The reversal of 616397166 is 661793616.

616397166 is a `hidden beast` number, since 6 + 1 + 639 + 7 + 1 + 6 + 6 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 22065 + ... + 41468.

It is an arithmetic number, because the mean of its divisors is an integer number (23539347).

Almost surely, 2^616397166 is an apocalyptic number.

616397166 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

616397166 is an abundant number, since it is smaller than the sum of its proper divisors (1078435818).

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

616397166 is a wasteful number, since it uses less digits than its factorization.

616397166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63566 (or 63556 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 616397166 is about 24827.3471397973. The cubic root of 616397166 is about 851.0469986282.

The spelling of 616397166 in words is "six hundred sixteen million, three hundred ninety-seven thousand, one hundred sixty-six".