11648665 has 16 divisors (see below), whose sum is σ = 16248960. Its totient is φ = 7850880.

The previous prime is 11648641. The next prime is 11648713. The reversal of 11648665 is 56684611.

11648665 = 506² + 507² + ... + 547².

It is not a de Polignac number, because 11648665 - 2¹¹ = 11646617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 756 + ... + 4885.

It is an arithmetic number, because the mean of its divisors is an integer number (1015560).

Almost surely, 2^11648665 is an apocalyptic number.

It is an amenable number.

11648665 is a deficient number, since it is larger than the sum of its proper divisors (4600295).

11648665 is an equidigital number, since it uses as much as digits as its factorization.

11648665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5712.

The product of its digits is 34560, while the sum is 37.

The square root of 11648665 is about 3413.0140638444. The cubic root of 11648665 is about 226.6863581028.

The spelling of 11648665 in words is "eleven million, six hundred forty-eight thousand, six hundred sixty-five".