13791664 has 10 divisors (see below), whose sum is σ = 26721380. Its totient is φ = 6895824.

The previous prime is 13791649. The next prime is 13791667. The reversal of 13791664 is 46619731.

It is not an unprimeable number, because it can be changed into a prime (13791667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430974 + ... + 431005.

It is an arithmetic number, because the mean of its divisors is an integer number (2672138).

Almost surely, 2^13791664 is an apocalyptic number.

It is an amenable number.

13791664 is a deficient number, since it is larger than the sum of its proper divisors (12929716).

13791664 is an equidigital number, since it uses as much as digits as its factorization.

13791664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861987 (or 861981 counting only the distinct ones).

The product of its digits is 27216, while the sum is 37.

The square root of 13791664 is about 3713.7129668298. The cubic root of 13791664 is about 239.8127242742.

The spelling of 13791664 in words is "thirteen million, seven hundred ninety-one thousand, six hundred sixty-four".