13663436 has 24 divisors (see below), whose sum is σ = 24837120. Its totient is φ = 6570000.

The previous prime is 13663423. The next prime is 13663457. The reversal of 13663436 is 63436631.

13663436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30905 + ... + 31343.

It is an arithmetic number, because the mean of its divisors is an integer number (1034880).

Almost surely, 2^13663436 is an apocalyptic number.

It is an amenable number.

13663436 is a deficient number, since it is larger than the sum of its proper divisors (11173684).

13663436 is a wasteful number, since it uses less digits than its factorization.

13663436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725 (or 723 counting only the distinct ones).

The product of its digits is 23328, while the sum is 32.

The square root of 13663436 is about 3696.4085272058. The cubic root of 13663436 is about 239.0671893166.

The spelling of 13663436 in words is "thirteen million, six hundred sixty-three thousand, four hundred thirty-six".