11678569 has 16 divisors (see below), whose sum is σ = 13932928. Its totient is φ = 9580032.

The previous prime is 11678533. The next prime is 11678593. The reversal of 11678569 is 96587611.

It is a happy number.

11678569 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11678569 - 2⁹ = 11678057 is a prime.

It is a super-2 number, since 2×11678569² = 272777947775522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11678869) 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, 17017 + ... + 17689.

It is an arithmetic number, because the mean of its divisors is an integer number (870808).

Almost surely, 2^11678569 is an apocalyptic number.

It is an amenable number.

11678569 is a deficient number, since it is larger than the sum of its proper divisors (2254359).

11678569 is an equidigital number, since it uses as much as digits as its factorization.

11678569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784.

The product of its digits is 90720, while the sum is 43.

The square root of 11678569 is about 3417.3921343621. The cubic root of 11678569 is about 226.8801724821.

The spelling of 11678569 in words is "eleven million, six hundred seventy-eight thousand, five hundred sixty-nine".