11566669 has 4 divisors (see below), whose sum is σ = 11579040. Its totient is φ = 11554300.

The previous prime is 11566663. The next prime is 11566673. The reversal of 11566669 is 96666511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96666511 = 479 ⋅201809.

It is a cyclic number.

It is not a de Polignac number, because 11566669 - 2¹¹ = 11564621 is a prime.

It is a super-2 number, since 2×11566669² = 267575663511122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11566663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4657 + ... + 6694.

It is an arithmetic number, because the mean of its divisors is an integer number (2894760).

Almost surely, 2^11566669 is an apocalyptic number.

It is an amenable number.

11566669 is a deficient number, since it is larger than the sum of its proper divisors (12371).

11566669 is a wasteful number, since it uses less digits than its factorization.

11566669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12370.

The product of its digits is 58320, while the sum is 40.

The square root of 11566669 is about 3400.9805938876. The cubic root of 11566669 is about 226.1532166453.

The spelling of 11566669 in words is "eleven million, five hundred sixty-six thousand, six hundred sixty-nine".