11916657 has 12 divisors (see below), whose sum is σ = 17268420. Its totient is φ = 7918848.

The previous prime is 11916637. The next prime is 11916659. The reversal of 11916657 is 75661911.

It is a happy number.

11916657 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2405601 + 9511056 = 1551^2 + 3084^2 .

It is a de Polignac number, because none of the positive numbers 2^k-11916657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11916659) 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, 1069 + ... + 4997.

It is an arithmetic number, because the mean of its divisors is an integer number (1439035).

Almost surely, 2^11916657 is an apocalyptic number.

It is an amenable number.

11916657 is a deficient number, since it is larger than the sum of its proper divisors (5351763).

11916657 is a wasteful number, since it uses less digits than its factorization.

11916657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4272 (or 4269 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The square root of 11916657 is about 3452.0511294012. The cubic root of 11916657 is about 228.4115949367.

The spelling of 11916657 in words is "eleven million, nine hundred sixteen thousand, six hundred fifty-seven".