166224423 has 16 divisors (see below), whose sum is σ = 223534080. Its totient is φ = 109870464.

The previous prime is 166224391. The next prime is 166224481. The reversal of 166224423 is 324422661.

It is not a de Polignac number, because 166224423 - 2⁵ = 166224391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166224493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280015 + ... + 280607.

It is an arithmetic number, because the mean of its divisors is an integer number (13970880).

Almost surely, 2^166224423 is an apocalyptic number.

166224423 is a deficient number, since it is larger than the sum of its proper divisors (57309657).

166224423 is a wasteful number, since it uses less digits than its factorization.

166224423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238.

The product of its digits is 13824, while the sum is 30.

The square root of 166224423 is about 12892.8050865589. The cubic root of 166224423 is about 549.8340248493.

The spelling of 166224423 in words is "one hundred sixty-six million, two hundred twenty-four thousand, four hundred twenty-three".