864859677 has 16 divisors (see below), whose sum is σ = 1261619712. Its totient is φ = 522639920.

The previous prime is 864859673. The next prime is 864859679. The reversal of 864859677 is 776958468.

It is not a de Polignac number, because 864859677 - 2² = 864859673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 864859677.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864859673) 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, 26313 + ... + 49214.

It is an arithmetic number, because the mean of its divisors is an integer number (78851232).

Almost surely, 2^864859677 is an apocalyptic number.

It is an amenable number.

864859677 is a deficient number, since it is larger than the sum of its proper divisors (396760035).

864859677 is a wasteful number, since it uses less digits than its factorization.

864859677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75888.

The product of its digits is 20321280, while the sum is 60.

The square root of 864859677 is about 29408.4966803813. The cubic root of 864859677 is about 952.7564181754.

The spelling of 864859677 in words is "eight hundred sixty-four million, eight hundred fifty-nine thousand, six hundred seventy-seven".