864774 has 24 divisors (see below), whose sum is σ = 1895400. Its totient is φ = 284928.

The previous prime is 864757. The next prime is 864781. The reversal of 864774 is 477468.

It is a happy number.

864774 is a `hidden beast` number, since 8 + 647 + 7 + 4 = 666.

It is a d-powerful number, because it can be written as 8 + 6⁵ + 7⁵ + 4⁴ + 7⁷ + 4⁷ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1702 + ... + 2150.

It is an arithmetic number, because the mean of its divisors is an integer number (78975).

2⁸⁶⁴⁷⁷⁴ is an apocalyptic number.

864774 is an abundant number, since it is smaller than the sum of its proper divisors (1030626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

864774 is a wasteful number, since it uses less digits than its factorization.

864774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564 (or 561 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 864774 is about 929.9322555971. The cubic root of 864774 is about 95.2724955651.

The spelling of 864774 in words is "eight hundred sixty-four thousand, seven hundred seventy-four".