13040664 has 96 divisors (see below), whose sum is σ = 40889520. Its totient is φ = 3435264.

The previous prime is 13040659. The next prime is 13040689. The reversal of 13040664 is 46604031.

13040664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14862 + ... + 15714.

Almost surely, 2^13040664 is an apocalyptic number.

13040664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13040664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20444760).

13040664 is an abundant number, since it is smaller than the sum of its proper divisors (27848856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13040664 is a wasteful number, since it uses less digits than its factorization.

13040664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889 (or 878 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 13040664 is about 3611.1859547800. The cubic root of 13040664 is about 235.3783794192.

Adding to 13040664 its reverse (46604031), we get a palindrome (59644695).

The spelling of 13040664 in words is "thirteen million, forty thousand, six hundred sixty-four".