864086678 has 96 divisors (see below), whose sum is σ = 1742295744. Its totient is φ = 317737728.

The previous prime is 864086633. The next prime is 864086687. The reversal of 864086678 is 876680468.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1083776 + ... + 1084572.

It is an arithmetic number, because the mean of its divisors is an integer number (18148914).

Almost surely, 2^864086678 is an apocalyptic number.

864086678 is an abundant number, since it is smaller than the sum of its proper divisors (878209066).

864086678 is a wasteful number, since it uses less digits than its factorization.

864086678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886 (or 879 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 53.

The square root of 864086678 is about 29395.3512991425. The cubic root of 864086678 is about 952.4724802891.

The spelling of 864086678 in words is "eight hundred sixty-four million, eighty-six thousand, six hundred seventy-eight".