166033623 has 16 divisors (see below), whose sum is σ = 254620160. Its totient is φ = 94270176.

The previous prime is 166033607. The next prime is 166033661. The reversal of 166033623 is 326330661.

It is not a de Polignac number, because 166033623 - 2⁴ = 166033607 is a prime.

It is a super-2 number, since 2×166033623² = 55134327933012258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166033603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21883 + ... + 28476.

It is an arithmetic number, because the mean of its divisors is an integer number (15913760).

Almost surely, 2^166033623 is an apocalyptic number.

166033623 is a deficient number, since it is larger than the sum of its proper divisors (88586537).

166033623 is a wasteful number, since it uses less digits than its factorization.

166033623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50526.

The product of its (nonzero) digits is 11664, while the sum is 30.

The square root of 166033623 is about 12885.4034861156. The cubic root of 166033623 is about 549.6235694197.

The spelling of 166033623 in words is "one hundred sixty-six million, thirty-three thousand, six hundred twenty-three".