11688669 has 12 divisors (see below), whose sum is σ = 17618016. Its totient is φ = 7453512.

The previous prime is 11688631. The next prime is 11688671. The reversal of 11688669 is 96688611.

It is a happy number.

It is not a de Polignac number, because 11688669 - 2¹¹ = 11686621 is a prime.

It is a super-2 number, since 2×11688669² = 273249965983122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11688679) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28027 + ... + 28440.

It is an arithmetic number, because the mean of its divisors is an integer number (1468168).

Almost surely, 2^11688669 is an apocalyptic number.

It is an amenable number.

11688669 is a deficient number, since it is larger than the sum of its proper divisors (5929347).

11688669 is a wasteful number, since it uses less digits than its factorization.

11688669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56496 (or 56493 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 11688669 is about 3418.8695500121. The cubic root of 11688669 is about 226.9455580465.

The spelling of 11688669 in words is "eleven million, six hundred eighty-eight thousand, six hundred sixty-nine".