11681879 has 8 divisors (see below), whose sum is σ = 12769680. Its totient is φ = 10598400.

The previous prime is 11681869. The next prime is 11681881. The reversal of 11681879 is 97818611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11681879 - 2⁸ = 11681623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11681869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7769 + ... + 9149.

It is an arithmetic number, because the mean of its divisors is an integer number (1596210).

Almost surely, 2^11681879 is an apocalyptic number.

11681879 is a deficient number, since it is larger than the sum of its proper divisors (1087801).

11681879 is a wasteful number, since it uses less digits than its factorization.

11681879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2161.

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

The square root of 11681879 is about 3417.8763874663. The cubic root of 11681879 is about 226.9016049719.

The spelling of 11681879 in words is "eleven million, six hundred eighty-one thousand, eight hundred seventy-nine".