13664992 has 24 divisors (see below), whose sum is σ = 29349432. Its totient is φ = 6211200.

The previous prime is 13664969. The next prime is 13664999. The reversal of 13664992 is 29946631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13664999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19059 + ... + 19762.

It is an arithmetic number, because the mean of its divisors is an integer number (1222893).

Almost surely, 2^13664992 is an apocalyptic number.

It is an amenable number.

13664992 is an abundant number, since it is smaller than the sum of its proper divisors (15684440).

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

13664992 is a wasteful number, since it uses less digits than its factorization.

13664992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38842 (or 38834 counting only the distinct ones).

The product of its digits is 69984, while the sum is 40.

The square root of 13664992 is about 3696.6189957852. The cubic root of 13664992 is about 239.0762640088.

The spelling of 13664992 in words is "thirteen million, six hundred sixty-four thousand, nine hundred ninety-two".