866635113 has 8 divisors (see below), whose sum is σ = 1174456576. Its totient is φ = 568285200.

The previous prime is 866635109. The next prime is 866635139. The reversal of 866635113 is 311536668.

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

It is not a de Polignac number, because 866635113 - 2² = 866635109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (866635103) 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, 2367673 + ... + 2368038.

It is an arithmetic number, because the mean of its divisors is an integer number (146807072).

Almost surely, 2^866635113 is an apocalyptic number.

It is an amenable number.

866635113 is a deficient number, since it is larger than the sum of its proper divisors (307821463).

866635113 is a wasteful number, since it uses less digits than its factorization.

866635113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4735775.

The product of its digits is 77760, while the sum is 39.

The square root of 866635113 is about 29438.6669704999. Note that the first 3 decimals coincide. The cubic root of 866635113 is about 953.4079311305.

The spelling of 866635113 in words is "eight hundred sixty-six million, six hundred thirty-five thousand, one hundred thirteen".