13663442 has 8 divisors (see below), whose sum is σ = 22071756. Its totient is φ = 6306192.

The previous prime is 13663423. The next prime is 13663457. The reversal of 13663442 is 24436631.

13663442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 12103441 + 1560001 = 3479^2 + 1249^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262733 + ... + 262784.

Almost surely, 2^13663442 is an apocalyptic number.

13663442 is a deficient number, since it is larger than the sum of its proper divisors (8408314).

13663442 is a wasteful number, since it uses less digits than its factorization.

13663442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525532.

The product of its digits is 10368, while the sum is 29.

The square root of 13663442 is about 3696.4093388043. The cubic root of 13663442 is about 239.0672243104.

The spelling of 13663442 in words is "thirteen million, six hundred sixty-three thousand, four hundred forty-two".