166432885 has 16 divisors (see below), whose sum is σ = 207152640. Its totient is φ = 128215360.

The previous prime is 166432883. The next prime is 166432897. The reversal of 166432885 is 588234661.

It is not a de Polignac number, because 166432885 - 2¹ = 166432883 is a prime.

It is a super-4 number, since 4×166432885⁴ (a number of 34 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166432883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62940 + ... + 65530.

It is an arithmetic number, because the mean of its divisors is an integer number (12947040).

Almost surely, 2^166432885 is an apocalyptic number.

It is an amenable number.

166432885 is a deficient number, since it is larger than the sum of its proper divisors (40719755).

166432885 is a wasteful number, since it uses less digits than its factorization.

166432885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3068.

The product of its digits is 276480, while the sum is 43.

The square root of 166432885 is about 12900.8869850100. The cubic root of 166432885 is about 550.0637777280.

The spelling of 166432885 in words is "one hundred sixty-six million, four hundred thirty-two thousand, eight hundred eighty-five".