11664999 has 8 divisors (see below), whose sum is σ = 17281520. Its totient is φ = 7776648.

The previous prime is 11664967. The next prime is 11665001. The reversal of 11664999 is 99946611.

11664999 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11664999 - 2⁵ = 11664967 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11664799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215992 + ... + 216045.

It is an arithmetic number, because the mean of its divisors is an integer number (2160190).

Almost surely, 2^11664999 is an apocalyptic number.

11664999 is a deficient number, since it is larger than the sum of its proper divisors (5616521).

11664999 is an equidigital number, since it uses as much as digits as its factorization.

11664999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432046 (or 432040 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 11664999 is about 3415.4061251921. The cubic root of 11664999 is about 226.7922633905.

The spelling of 11664999 in words is "eleven million, six hundred sixty-four thousand, nine hundred ninety-nine".