12623665 has 16 divisors (see below), whose sum is σ = 16321536. Its totient is φ = 9345600.

The previous prime is 12623659. The next prime is 12623669. The reversal of 12623665 is 56632621.

12623665 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12623665 - 2¹⁷ = 12492593 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (12623669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1795 + ... + 5335.

It is an arithmetic number, because the mean of its divisors is an integer number (1020096).

Almost surely, 2^12623665 is an apocalyptic number.

It is an amenable number.

12623665 is a deficient number, since it is larger than the sum of its proper divisors (3697871).

12623665 is a wasteful number, since it uses less digits than its factorization.

12623665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3600.

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

The square root of 12623665 is about 3552.9797353771. The cubic root of 12623665 is about 232.8422676980.

The spelling of 12623665 in words is "twelve million, six hundred twenty-three thousand, six hundred sixty-five".