166214673 has 24 divisors (see below), whose sum is σ = 249963168. Its totient is φ = 110372544.

The previous prime is 166214647. The next prime is 166214677. The reversal of 166214673 is 376412661.

It is a happy number.

It is not a de Polignac number, because 166214673 - 2⁹ = 166214161 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (166214677) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67561 + ... + 69977.

It is an arithmetic number, because the mean of its divisors is an integer number (10415132).

Almost surely, 2^166214673 is an apocalyptic number.

It is an amenable number.

166214673 is a deficient number, since it is larger than the sum of its proper divisors (83748495).

166214673 is an equidigital number, since it uses as much as digits as its factorization.

166214673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2715 (or 2703 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 166214673 is about 12892.4269631439. The cubic root of 166214673 is about 549.8232743502.

The spelling of 166214673 in words is "one hundred sixty-six million, two hundred fourteen thousand, six hundred seventy-three".