11666499 has 16 divisors (see below), whose sum is σ = 16816800. Its totient is φ = 7151616.

The previous prime is 11666491. The next prime is 11666521. The reversal of 11666499 is 99466611.

It is not a de Polignac number, because 11666499 - 2³ = 11666491 is a prime.

It is a super-2 number, since 2×11666499² = 272214397834002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11666499.

It is not an unprimeable number, because it can be changed into a prime (11666491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14787 + ... + 15555.

It is an arithmetic number, because the mean of its divisors is an integer number (1051050).

Almost surely, 2^11666499 is an apocalyptic number.

11666499 is a deficient number, since it is larger than the sum of its proper divisors (5150301).

11666499 is a wasteful number, since it uses less digits than its factorization.

11666499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174.

The product of its digits is 69984, while the sum is 42.

The square root of 11666499 is about 3415.6257113448. The cubic root of 11666499 is about 226.8019840319.

The spelling of 11666499 in words is "eleven million, six hundred sixty-six thousand, four hundred ninety-nine".