13667968 has 16 divisors (see below), whose sum is σ = 27229410. Its totient is φ = 6833920.

The previous prime is 13667963. The next prime is 13667971. The reversal of 13667968 is 86976631.

It can be written as a sum of positive squares in only one way, i.e., 8248384 + 5419584 = 2872^2 + 2328^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (13667963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53263 + ... + 53518.

Almost surely, 2^13667968 is an apocalyptic number.

It is an amenable number.

13667968 is a deficient number, since it is larger than the sum of its proper divisors (13561442).

13667968 is an equidigital number, since it uses as much as digits as its factorization.

13667968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106795 (or 106783 counting only the distinct ones).

The product of its digits is 326592, while the sum is 46.

The square root of 13667968 is about 3697.0215038596. The cubic root of 13667968 is about 239.0936183138.

The spelling of 13667968 in words is "thirteen million, six hundred sixty-seven thousand, nine hundred sixty-eight".