11881679 has 4 divisors (see below), whose sum is σ = 12032160. Its totient is φ = 11731200.

The previous prime is 11881673. The next prime is 11881687. The reversal of 11881679 is 97618811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97618811 = 17 ⋅5742283.

It is a cyclic number.

It is not a de Polignac number, because 11881679 - 2⁸ = 11881423 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 (11881673) 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, 75122 + ... + 75279.

It is an arithmetic number, because the mean of its divisors is an integer number (3008040).

Almost surely, 2^11881679 is an apocalyptic number.

11881679 is a deficient number, since it is larger than the sum of its proper divisors (150481).

11881679 is an equidigital number, since it uses as much as digits as its factorization.

11881679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150480.

The product of its digits is 24192, while the sum is 41.

The square root of 11881679 is about 3446.9811429713. The cubic root of 11881679 is about 228.1878965622.

The spelling of 11881679 in words is "eleven million, eight hundred eighty-one thousand, six hundred seventy-nine".