16664157 has 8 divisors (see below), whose sum is σ = 24687680. Its totient is φ = 11109420.

The previous prime is 16664149. The next prime is 16664161. The reversal of 16664157 is 75146661.

It is not a de Polignac number, because 16664157 - 2³ = 16664149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16664107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308569 + ... + 308622.

It is an arithmetic number, because the mean of its divisors is an integer number (3085960).

Almost surely, 2^16664157 is an apocalyptic number.

It is an amenable number.

16664157 is a deficient number, since it is larger than the sum of its proper divisors (8023523).

16664157 is an equidigital number, since it uses as much as digits as its factorization.

16664157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617200 (or 617194 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 16664157 is about 4082.1755229289. The cubic root of 16664157 is about 255.4236556127.

The spelling of 16664157 in words is "sixteen million, six hundred sixty-four thousand, one hundred fifty-seven".