166557327 has 8 divisors (see below), whose sum is σ = 229240320. Its totient is φ = 107456280.

The previous prime is 166557319. The next prime is 166557337. The reversal of 166557327 is 723755661.

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

It is not a de Polignac number, because 166557327 - 2³ = 166557319 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166557317) 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, 895377 + ... + 895562.

It is an arithmetic number, because the mean of its divisors is an integer number (28655040).

Almost surely, 2^166557327 is an apocalyptic number.

166557327 is a deficient number, since it is larger than the sum of its proper divisors (62682993).

166557327 is a wasteful number, since it uses less digits than its factorization.

166557327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1790973.

The product of its digits is 264600, while the sum is 42.

The square root of 166557327 is about 12905.7090855172. The cubic root of 166557327 is about 550.2008379479.

The spelling of 166557327 in words is "one hundred sixty-six million, five hundred fifty-seven thousand, three hundred twenty-seven".