155646564 has 24 divisors (see below), whose sum is σ = 363658848. Its totient is φ = 51813120.

The previous prime is 155646551. The next prime is 155646703. The reversal of 155646564 is 465646551.

155646564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1204 + ... + 17684.

It is an arithmetic number, because the mean of its divisors is an integer number (15152452).

Almost surely, 2^155646564 is an apocalyptic number.

It is an amenable number.

155646564 is an abundant number, since it is smaller than the sum of its proper divisors (208012284).

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

155646564 is a wasteful number, since it uses less digits than its factorization.

155646564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17275 (or 17273 counting only the distinct ones).

The product of its digits is 432000, while the sum is 42.

The square root of 155646564 is about 12475.8392102495. The cubic root of 155646564 is about 537.9144108213.

The spelling of 155646564 in words is "one hundred fifty-five million, six hundred forty-six thousand, five hundred sixty-four".