12623639 has 16 divisors (see below), whose sum is σ = 15637248. Its totient is φ = 9942912.

The previous prime is 12623629. The next prime is 12623641. The reversal of 12623639 is 93632621.

12623639 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12623639 - 2⁸ = 12623383 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 (12623609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3884 + ... + 6350.

It is an arithmetic number, because the mean of its divisors is an integer number (977328).

Almost surely, 2^12623639 is an apocalyptic number.

12623639 is a deficient number, since it is larger than the sum of its proper divisors (3013609).

12623639 is a wasteful number, since it uses less digits than its factorization.

12623639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2534.

The product of its digits is 11664, while the sum is 32.

The square root of 12623639 is about 3552.9760764745. The cubic root of 12623639 is about 232.8421078421.

The spelling of 12623639 in words is "twelve million, six hundred twenty-three thousand, six hundred thirty-nine".