16625623 has 16 divisors (see below), whose sum is σ = 19849536. Its totient is φ = 13628160.

The previous prime is 16625597. The next prime is 16625663. The reversal of 16625623 is 32652661.

It is not a de Polignac number, because 16625623 - 2⁵ = 16625591 is a prime.

It is a super-2 number, since 2×16625623² = 552822680276258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16625663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14665 + ... + 15757.

It is an arithmetic number, because the mean of its divisors is an integer number (1240596).

Almost surely, 2^16625623 is an apocalyptic number.

16625623 is a deficient number, since it is larger than the sum of its proper divisors (3223913).

16625623 is a wasteful number, since it uses less digits than its factorization.

16625623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1194.

The product of its digits is 12960, while the sum is 31.

The square root of 16625623 is about 4077.4530040210. The cubic root of 16625623 is about 255.2266241144.

The spelling of 16625623 in words is "sixteen million, six hundred twenty-five thousand, six hundred twenty-three".