13564623 has 16 divisors (see below), whose sum is σ = 19560960. Its totient is φ = 8328576.

The previous prime is 13564609. The next prime is 13564669. The reversal of 13564623 is 32646531.

It is not a de Polignac number, because 13564623 - 2¹⁴ = 13548239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13564123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 433 + ... + 5226.

It is an arithmetic number, because the mean of its divisors is an integer number (1222560).

Almost surely, 2^13564623 is an apocalyptic number.

13564623 is a deficient number, since it is larger than the sum of its proper divisors (5996337).

13564623 is a wasteful number, since it uses less digits than its factorization.

13564623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5726.

The product of its digits is 12960, while the sum is 30.

The square root of 13564623 is about 3683.0181916466. The cubic root of 13564623 is about 238.4894887887.

The spelling of 13564623 in words is "thirteen million, five hundred sixty-four thousand, six hundred twenty-three".