13564668 has 48 divisors (see below), whose sum is σ = 34503840. Its totient is φ = 4122624.

The previous prime is 13564609. The next prime is 13564669. The reversal of 13564668 is 86646531.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13564669) 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, 13396 + ... + 14372.

It is an arithmetic number, because the mean of its divisors is an integer number (718830).

Almost surely, 2^13564668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13564668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17251920).

13564668 is an abundant number, since it is smaller than the sum of its proper divisors (20939172).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13564668 is a wasteful number, since it uses less digits than its factorization.

13564668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1086 (or 1084 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 13564668 is about 3683.0243007615. The cubic root of 13564668 is about 238.4897525143.

The spelling of 13564668 in words is "thirteen million, five hundred sixty-four thousand, six hundred sixty-eight".