13664011 has 4 divisors (see below), whose sum is σ = 13705624. Its totient is φ = 13622400.

The previous prime is 13663999. The next prime is 13664069. The reversal of 13664011 is 11046631.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13664011 - 2⁷ = 13663883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13664071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20310 + ... + 20971.

It is an arithmetic number, because the mean of its divisors is an integer number (3426406).

Almost surely, 2^13664011 is an apocalyptic number.

13664011 is a deficient number, since it is larger than the sum of its proper divisors (41613).

13664011 is an equidigital number, since it uses as much as digits as its factorization.

13664011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41612.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 13664011 is about 3696.4863045871. The cubic root of 13664011 is about 239.0705428339.

The spelling of 13664011 in words is "thirteen million, six hundred sixty-four thousand, eleven".