166579087 has 4 divisors (see below), whose sum is σ = 173821680. Its totient is φ = 159336496.

The previous prime is 166579079. The next prime is 166579097. The reversal of 166579087 is 780975661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 166579087 - 2³ = 166579079 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166579087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166579067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3621262 + ... + 3621307.

It is an arithmetic number, because the mean of its divisors is an integer number (43455420).

Almost surely, 2^166579087 is an apocalyptic number.

166579087 is a deficient number, since it is larger than the sum of its proper divisors (7242593).

166579087 is an equidigital number, since it uses as much as digits as its factorization.

166579087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7242592.

The product of its (nonzero) digits is 635040, while the sum is 49.

The square root of 166579087 is about 12906.5520957380. The cubic root of 166579087 is about 550.2247973639.

The spelling of 166579087 in words is "one hundred sixty-six million, five hundred seventy-nine thousand, eighty-seven".