11664215 has 8 divisors (see below), whose sum is σ = 14448768. Its totient is φ = 9030240.

The previous prime is 11664209. The next prime is 11664217. The reversal of 11664215 is 51246611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11664215 - 2¹² = 11660119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11664217) 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, 37472 + ... + 37781.

It is an arithmetic number, because the mean of its divisors is an integer number (1806096).

Almost surely, 2^11664215 is an apocalyptic number.

11664215 is a deficient number, since it is larger than the sum of its proper divisors (2784553).

11664215 is an equidigital number, since it uses as much as digits as its factorization.

11664215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75289.

The product of its digits is 1440, while the sum is 26.

The square root of 11664215 is about 3415.2913492117. The cubic root of 11664215 is about 226.7871824037.

The spelling of 11664215 in words is "eleven million, six hundred sixty-four thousand, two hundred fifteen".