11688631 has 2 divisors, whose sum is σ = 11688632. Its totient is φ = 11688630.

The previous prime is 11688587. The next prime is 11688671. The reversal of 11688631 is 13688611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11688631 - 2²¹ = 9591479 is a prime.

It is a super-2 number, since 2×11688631² = 273248189308322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11688671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5844315 + 5844316.

It is an arithmetic number, because the mean of its divisors is an integer number (5844316).

Almost surely, 2^11688631 is an apocalyptic number.

11688631 is a deficient number, since it is larger than the sum of its proper divisors (1).

11688631 is an equidigital number, since it uses as much as digits as its factorization.

11688631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 34.

The square root of 11688631 is about 3418.8639926151. The cubic root of 11688631 is about 226.9453121120.

The spelling of 11688631 in words is "eleven million, six hundred eighty-eight thousand, six hundred thirty-one".