166504395 has 8 divisors (see below), whose sum is σ = 266407056. Its totient is φ = 88802336.

The previous prime is 166504361. The next prime is 166504397. The reversal of 166504395 is 593405661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166504395 - 2²⁵ = 132949963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166504397) 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, 5550132 + ... + 5550161.

It is an arithmetic number, because the mean of its divisors is an integer number (33300882).

Almost surely, 2^166504395 is an apocalyptic number.

166504395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

166504395 is a deficient number, since it is larger than the sum of its proper divisors (99902661).

166504395 is a wasteful number, since it uses less digits than its factorization.

166504395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11100301.

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 166504395 is about 12903.6582022309. The cubic root of 166504395 is about 550.1425470740.

The spelling of 166504395 in words is "one hundred sixty-six million, five hundred four thousand, three hundred ninety-five".