11664427 has 4 divisors (see below), whose sum is σ = 12171600. Its totient is φ = 11157256.

The previous prime is 11664421. The next prime is 11664437. The reversal of 11664427 is 72446611.

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 11664427 - 2²³ = 3275819 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (11664421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253552 + ... + 253597.

It is an arithmetic number, because the mean of its divisors is an integer number (3042900).

Almost surely, 2^11664427 is an apocalyptic number.

11664427 is a deficient number, since it is larger than the sum of its proper divisors (507173).

11664427 is an equidigital number, since it uses as much as digits as its factorization.

11664427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507172.

The product of its digits is 8064, while the sum is 31.

The square root of 11664427 is about 3415.3223859542. The cubic root of 11664427 is about 226.7885563665.

The spelling of 11664427 in words is "eleven million, six hundred sixty-four thousand, four hundred twenty-seven".