13664264 has 8 divisors (see below), whose sum is σ = 25620510. Its totient is φ = 6832128.

The previous prime is 13664257. The next prime is 13664279. The reversal of 13664264 is 46246631.

It can be written as a sum of positive squares in only one way, i.e., 13468900 + 195364 = 3670^2 + 442^2 .

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

It is a super-2 number, since 2×13664264² = 373424221323392, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13664264.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 854009 + ... + 854024.

Almost surely, 2^13664264 is an apocalyptic number.

It is an amenable number.

13664264 is a deficient number, since it is larger than the sum of its proper divisors (11956246).

13664264 is a wasteful number, since it uses less digits than its factorization.

13664264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1708039 (or 1708035 counting only the distinct ones).

The product of its digits is 20736, while the sum is 32.

The square root of 13664264 is about 3696.5205261164. The cubic root of 13664264 is about 239.0720183517.

The spelling of 13664264 in words is "thirteen million, six hundred sixty-four thousand, two hundred sixty-four".