11641636 has 12 divisors (see below), whose sum is σ = 20560540. Its totient is φ = 5767200.

The previous prime is 11641621. The next prime is 11641639. The reversal of 11641636 is 63614611.

It can be written as a sum of positive squares in 2 ways, for example, as 4024036 + 7617600 = 2006^2 + 2760^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (11641639) 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, 12915 + ... + 13786.

Almost surely, 2^11641636 is an apocalyptic number.

It is an amenable number.

11641636 is a deficient number, since it is larger than the sum of its proper divisors (8918904).

11641636 is a wasteful number, since it uses less digits than its factorization.

11641636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26814 (or 26812 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

The square root of 11641636 is about 3411.9841734686. The cubic root of 11641636 is about 226.6407534775.

The spelling of 11641636 in words is "eleven million, six hundred forty-one thousand, six hundred thirty-six".