13564213 has 4 divisors (see below), whose sum is σ = 14607628. Its totient is φ = 12520800.

The previous prime is 13564211. The next prime is 13564219. The reversal of 13564213 is 31246531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4761124 + 8803089 = 2182^2 + 2967^2 .

It is a cyclic number.

It is not a de Polignac number, because 13564213 - 2¹ = 13564211 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 (13564211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 521688 + ... + 521713.

It is an arithmetic number, because the mean of its divisors is an integer number (3651907).

Almost surely, 2^13564213 is an apocalyptic number.

13564213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13564213 is a deficient number, since it is larger than the sum of its proper divisors (1043415).

13564213 is a wasteful number, since it uses less digits than its factorization.

13564213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043414.

The product of its digits is 2160, while the sum is 25.

The square root of 13564213 is about 3682.9625303551. The cubic root of 13564213 is about 238.4870859285.

The spelling of 13564213 in words is "thirteen million, five hundred sixty-four thousand, two hundred thirteen".