166055864 has 32 divisors (see below), whose sum is σ = 355032720. Its totient is φ = 72132096.

The previous prime is 166055861. The next prime is 166055899. The reversal of 166055864 is 468550661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166055861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45194 + ... + 48729.

Almost surely, 2^166055864 is an apocalyptic number.

It is an amenable number.

166055864 is an abundant number, since it is smaller than the sum of its proper divisors (188976856).

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

166055864 is a wasteful number, since it uses less digits than its factorization.

166055864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93959 (or 93955 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 166055864 is about 12886.2664880096. The cubic root of 166055864 is about 549.6481098949.

The spelling of 166055864 in words is "one hundred sixty-six million, fifty-five thousand, eight hundred sixty-four".