166464015 has 16 divisors (see below), whose sum is σ = 267699168. Its totient is φ = 88328576.

The previous prime is 166464007. The next prime is 166464047. The reversal of 166464015 is 510464661.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 166464015 - 2³ = 166464007 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 25212 + ... + 31121.

It is an arithmetic number, because the mean of its divisors is an integer number (16731198).

Almost surely, 2^166464015 is an apocalyptic number.

166464015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

166464015 is a deficient number, since it is larger than the sum of its proper divisors (101235153).

166464015 is a wasteful number, since it uses less digits than its factorization.

166464015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56538.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 166464015 is about 12902.0934347880. The cubic root of 166464015 is about 550.0980706662.

The spelling of 166464015 in words is "one hundred sixty-six million, four hundred sixty-four thousand, fifteen".