612905164 has 6 divisors (see below), whose sum is σ = 1072584044. Its totient is φ = 306452580.

The previous prime is 612905159. The next prime is 612905171. The reversal of 612905164 is 461509216.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76613142 + ... + 76613149.

Almost surely, 2^612905164 is an apocalyptic number.

It is an amenable number.

612905164 is a deficient number, since it is larger than the sum of its proper divisors (459678880).

612905164 is a wasteful number, since it uses less digits than its factorization.

612905164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153226295 (or 153226293 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 612905164 is about 24756.9215372186. The cubic root of 612905164 is about 849.4368421935.

The spelling of 612905164 in words is "six hundred twelve million, nine hundred five thousand, one hundred sixty-four".