13458664 has 8 divisors (see below), whose sum is σ = 25235010. Its totient is φ = 6729328.

The previous prime is 13458649. The next prime is 13458691. The reversal of 13458664 is 46685431.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8749764 + 4708900 = 2958^2 + 2170^2 .

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

It is a super-2 number, since 2×13458664² = 362271273329792, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 841159 + ... + 841174.

Almost surely, 2^13458664 is an apocalyptic number.

It is an amenable number.

13458664 is a deficient number, since it is larger than the sum of its proper divisors (11776346).

13458664 is a wasteful number, since it uses less digits than its factorization.

13458664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682339 (or 1682335 counting only the distinct ones).

The product of its digits is 69120, while the sum is 37.

The square root of 13458664 is about 3668.6051845354. The cubic root of 13458664 is about 237.8668841089.

The spelling of 13458664 in words is "thirteen million, four hundred fifty-eight thousand, six hundred sixty-four".