11775663 has 12 divisors (see below), whose sum is σ = 17133480. Its totient is φ = 7793136.

The previous prime is 11775641. The next prime is 11775677. The reversal of 11775663 is 36657711.

It is not a de Polignac number, because 11775663 - 2¹² = 11771567 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11775613) 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, 3456 + ... + 5957.

It is an arithmetic number, because the mean of its divisors is an integer number (1427790).

Almost surely, 2^11775663 is an apocalyptic number.

11775663 is a deficient number, since it is larger than the sum of its proper divisors (5357817).

11775663 is a wasteful number, since it uses less digits than its factorization.

11775663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9558 (or 9555 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The square root of 11775663 is about 3431.5685917667. The cubic root of 11775663 is about 227.5071881157.

The spelling of 11775663 in words is "eleven million, seven hundred seventy-five thousand, six hundred sixty-three".