13923664 has 10 divisors (see below), whose sum is σ = 26977130. Its totient is φ = 6961824.

The previous prime is 13923661. The next prime is 13923667. The reversal of 13923664 is 46632931.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (13923661) and next prime (13923667).

It can be written as a sum of positive squares in only one way, i.e., 13838400 + 85264 = 3720^2 + 292^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13923661) 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, 435099 + ... + 435130.

It is an arithmetic number, because the mean of its divisors is an integer number (2697713).

Almost surely, 2^13923664 is an apocalyptic number.

It is an amenable number.

13923664 is a deficient number, since it is larger than the sum of its proper divisors (13053466).

13923664 is an equidigital number, since it uses as much as digits as its factorization.

13923664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 870237 (or 870231 counting only the distinct ones).

The product of its digits is 23328, while the sum is 34.

The square root of 13923664 is about 3731.4426164689. The cubic root of 13923664 is about 240.5753787374.

The spelling of 13923664 in words is "thirteen million, nine hundred twenty-three thousand, six hundred sixty-four".