166801864 has 16 divisors (see below), whose sum is σ = 316713600. Its totient is φ = 82344912.

The previous prime is 166801849. The next prime is 166801889. The reversal of 166801864 is 468108661.

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, 131332 + ... + 132595.

It is an arithmetic number, because the mean of its divisors is an integer number (19794600).

Almost surely, 2^166801864 is an apocalyptic number.

It is an amenable number.

166801864 is a deficient number, since it is larger than the sum of its proper divisors (149911736).

166801864 is a wasteful number, since it uses less digits than its factorization.

166801864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264012 (or 264008 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 166801864 is about 12915.1795961187. The cubic root of 166801864 is about 550.4699718511.

The spelling of 166801864 in words is "one hundred sixty-six million, eight hundred one thousand, eight hundred sixty-four".