13663304 has 8 divisors (see below), whose sum is σ = 25618710. Its totient is φ = 6831648.

The previous prime is 13663303. The next prime is 13663319. The reversal of 13663304 is 40336631.

It can be written as a sum of positive squares in only one way, i.e., 12974404 + 688900 = 3602^2 + 830^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (13663303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 853949 + ... + 853964.

Almost surely, 2^13663304 is an apocalyptic number.

It is an amenable number.

13663304 is a deficient number, since it is larger than the sum of its proper divisors (11955406).

13663304 is a wasteful number, since it uses less digits than its factorization.

13663304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707919 (or 1707915 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 13663304 is about 3696.3906719934. The cubic root of 13663304 is about 239.0664194524.

Adding to 13663304 its reverse (40336631), we get a palindrome (53999935).

The spelling of 13663304 in words is "thirteen million, six hundred sixty-three thousand, three hundred four".