13622565 has 16 divisors (see below), whose sum is σ = 23777856. Its totient is φ = 6604800.

The previous prime is 13622561. The next prime is 13622573. The reversal of 13622565 is 56522631.

It is not a de Polignac number, because 13622565 - 2² = 13622561 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13622561) 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, 41116 + ... + 41445.

It is an arithmetic number, because the mean of its divisors is an integer number (1486116).

Almost surely, 2^13622565 is an apocalyptic number.

13622565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13622565 is a deficient number, since it is larger than the sum of its proper divisors (10155291).

13622565 is a wasteful number, since it uses less digits than its factorization.

13622565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82580.

The product of its digits is 10800, while the sum is 30.

The square root of 13622565 is about 3690.8759123005. The cubic root of 13622565 is about 238.8285798924.

The spelling of 13622565 in words is "thirteen million, six hundred twenty-two thousand, five hundred sixty-five".