13631564 has 6 divisors (see below), whose sum is σ = 23855244. Its totient is φ = 6815780.

The previous prime is 13631549. The next prime is 13631581. The reversal of 13631564 is 46513631.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1703942 + ... + 1703949.

It is an arithmetic number, because the mean of its divisors is an integer number (3975874).

Almost surely, 2^13631564 is an apocalyptic number.

It is an amenable number.

13631564 is a deficient number, since it is larger than the sum of its proper divisors (10223680).

13631564 is a wasteful number, since it uses less digits than its factorization.

13631564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3407895 (or 3407893 counting only the distinct ones).

The product of its digits is 6480, while the sum is 29.

The square root of 13631564 is about 3692.0947983496. The cubic root of 13631564 is about 238.8811579815.

The spelling of 13631564 in words is "thirteen million, six hundred thirty-one thousand, five hundred sixty-four".