166632427 has 8 divisors (see below), whose sum is σ = 179610480. Its totient is φ = 153677280.

The previous prime is 166632391. The next prime is 166632443. The reversal of 166632427 is 724236661.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166632427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166632457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11277 + ... + 21457.

It is an arithmetic number, because the mean of its divisors is an integer number (22451310).

Almost surely, 2^166632427 is an apocalyptic number.

166632427 is a deficient number, since it is larger than the sum of its proper divisors (12978053).

166632427 is a wasteful number, since it uses less digits than its factorization.

166632427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11453.

The product of its digits is 72576, while the sum is 37.

The square root of 166632427 is about 12908.6183226556. The cubic root of 166632427 is about 550.2835199387.

The spelling of 166632427 in words is "one hundred sixty-six million, six hundred thirty-two thousand, four hundred twenty-seven".