165012564 has 24 divisors (see below), whose sum is σ = 391343008. Its totient is φ = 54102240.

The previous prime is 165012559. The next prime is 165012569. The reversal of 165012564 is 465210561.

165012564 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (165012559) and next prime (165012569).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165012569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111982 + ... + 113445.

Almost surely, 2^165012564 is an apocalyptic number.

It is an amenable number.

165012564 is an abundant number, since it is smaller than the sum of its proper divisors (226330444).

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

165012564 is a wasteful number, since it uses less digits than its factorization.

165012564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225495 (or 225493 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 165012564 is about 12845.7216223924. The cubic root of 165012564 is about 548.4945763262.

The spelling of 165012564 in words is "one hundred sixty-five million, twelve thousand, five hundred sixty-four".