161230564 has 72 divisors (see below), whose sum is σ = 325090304. Its totient is φ = 69854400.

The previous prime is 161230541. The next prime is 161230579. The reversal of 161230564 is 465032161.

161230564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1269469 + ... + 1269595.

Almost surely, 2^161230564 is an apocalyptic number.

It is an amenable number.

161230564 is an abundant number, since it is smaller than the sum of its proper divisors (163859740).

161230564 is a wasteful number, since it uses less digits than its factorization.

161230564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 161230564 is about 12697.6597843855. The cubic root of 161230564 is about 544.2717473398.

The spelling of 161230564 in words is "one hundred sixty-one million, two hundred thirty thousand, five hundred sixty-four".