11664155 has 4 divisors (see below), whose sum is σ = 13996992. Its totient is φ = 9331320.

The previous prime is 11664089. The next prime is 11664181. The reversal of 11664155 is 55146611.

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

It is not a de Polignac number, because 11664155 - 2¹⁸ = 11402011 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1166411 + ... + 1166420.

It is an arithmetic number, because the mean of its divisors is an integer number (3499248).

Almost surely, 2^11664155 is an apocalyptic number.

11664155 is a deficient number, since it is larger than the sum of its proper divisors (2332837).

11664155 is an equidigital number, since it uses as much as digits as its factorization.

11664155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2332836.

The product of its digits is 3600, while the sum is 29.

The square root of 11664155 is about 3415.2825651767. The cubic root of 11664155 is about 226.7867935433.

The spelling of 11664155 in words is "eleven million, six hundred sixty-four thousand, one hundred fifty-five".