11575663 has 4 divisors (see below), whose sum is σ = 12628008. Its totient is φ = 10523320.

The previous prime is 11575651. The next prime is 11575687. The reversal of 11575663 is 36657511.

11575663 is nontrivially palindromic in base 14.

11575663 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36657511 = 11 ⋅3332501.

It is a cyclic number.

It is not a de Polignac number, because 11575663 - 2¹⁷ = 11444591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11575063) 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, 526156 + ... + 526177.

It is an arithmetic number, because the mean of its divisors is an integer number (3157002).

Almost surely, 2^11575663 is an apocalyptic number.

11575663 is a deficient number, since it is larger than the sum of its proper divisors (1052345).

11575663 is a wasteful number, since it uses less digits than its factorization.

11575663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052344.

The product of its digits is 18900, while the sum is 34.

The square root of 11575663 is about 3402.3026026502. The cubic root of 11575663 is about 226.2118187964.

The spelling of 11575663 in words is "eleven million, five hundred seventy-five thousand, six hundred sixty-three".