166012564 has 12 divisors (see below), whose sum is σ = 299893888. Its totient is φ = 80328600.

The previous prime is 166012549. The next prime is 166012579. The reversal of 166012564 is 465210661.

It is an interprime number because it is at equal distance from previous prime (166012549) and next prime (166012579).

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 669282 + ... + 669529.

Almost surely, 2^166012564 is an apocalyptic number.

It is an amenable number.

166012564 is a deficient number, since it is larger than the sum of its proper divisors (133881324).

166012564 is a wasteful number, since it uses less digits than its factorization.

166012564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338846 (or 1338844 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 166012564 is about 12884.5862952599. The cubic root of 166012564 is about 549.6003311303.

The spelling of 166012564 in words is "one hundred sixty-six million, twelve thousand, five hundred sixty-four".