11668569 has 16 divisors (see below), whose sum is σ = 17038080. Its totient is φ = 7044560.

The previous prime is 11668541. The next prime is 11668583. The reversal of 11668569 is 96586611.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11668569 - 2⁷ = 11668441 is a prime.

It is a super-2 number, since 2×11668569² = 272311005015522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11668569.

It is not an unprimeable number, because it can be changed into a prime (11668589) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10942 + ... + 11960.

It is an arithmetic number, because the mean of its divisors is an integer number (1064880).

Almost surely, 2^11668569 is an apocalyptic number.

It is an amenable number.

11668569 is a deficient number, since it is larger than the sum of its proper divisors (5369511).

11668569 is a wasteful number, since it uses less digits than its factorization.

11668569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1380.

The product of its digits is 77760, while the sum is 42.

The square root of 11668569 is about 3415.9287170549. The cubic root of 11668569 is about 226.8153971487.

The spelling of 11668569 in words is "eleven million, six hundred sixty-eight thousand, five hundred sixty-nine".