12622665 has 32 divisors (see below), whose sum is σ = 22260096. Its totient is φ = 6056960.

The previous prime is 12622663. The next prime is 12622667. The reversal of 12622665 is 56622621.

It is an interprime number because it is at equal distance from previous prime (12622663) and next prime (12622667).

It is not a de Polignac number, because 12622665 - 2¹ = 12622663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12622663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18307 + ... + 18983.

It is an arithmetic number, because the mean of its divisors is an integer number (695628).

Almost surely, 2^12622665 is an apocalyptic number.

12622665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12622665 is a deficient number, since it is larger than the sum of its proper divisors (9637431).

12622665 is a wasteful number, since it uses less digits than its factorization.

12622665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 809.

The product of its digits is 8640, while the sum is 30.

The square root of 12622665 is about 3552.8390056404. The cubic root of 12622665 is about 232.8361192349.

It can be divided in two parts, 126 and 22665, that added together give a triangular number (22791 = T₂₁₃).

The spelling of 12622665 in words is "twelve million, six hundred twenty-two thousand, six hundred sixty-five".