11639568 has 20 divisors (see below), whose sum is σ = 30069008. Its totient is φ = 3879840.

The previous prime is 11639561. The next prime is 11639569. The reversal of 11639568 is 86593611.

It is not an unprimeable number, because it can be changed into a prime (11639561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121198 + ... + 121293.

Almost surely, 2^11639568 is an apocalyptic number.

It is an amenable number.

11639568 is an abundant number, since it is smaller than the sum of its proper divisors (18429440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11639568 is a wasteful number, since it uses less digits than its factorization.

11639568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242502 (or 242496 counting only the distinct ones).

The product of its digits is 38880, while the sum is 39.

The square root of 11639568 is about 3411.6811105377. The cubic root of 11639568 is about 226.6273326595.

It can be divided in two parts, 1163 and 9568, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 11639568 in words is "eleven million, six hundred thirty-nine thousand, five hundred sixty-eight".