166504090 has 16 divisors (see below), whose sum is σ = 300126240. Its totient is φ = 66508560.

The previous prime is 166504043. The next prime is 166504097. The reversal of 166504090 is 90405661.

166504090 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×166504090² = 55447223973456200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166504097) 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, 3876 + ... + 18655.

It is an arithmetic number, because the mean of its divisors is an integer number (18757890).

Almost surely, 2^166504090 is an apocalyptic number.

166504090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166504090 is a deficient number, since it is larger than the sum of its proper divisors (133622150).

166504090 is a wasteful number, since it uses less digits than its factorization.

166504090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23277.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 166504090 is about 12903.6463838715. The cubic root of 166504090 is about 550.1422111598.

The spelling of 166504090 in words is "one hundred sixty-six million, five hundred four thousand, ninety".