864677 has 4 divisors (see below), whose sum is σ = 943296. Its totient is φ = 786060.

The previous prime is 864673. The next prime is 864679. The reversal of 864677 is 776468.

864677 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 864677 - 2² = 864673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 864677.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 864677.

It is not an unprimeable number, because it can be changed into a prime (864673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39293 + ... + 39314.

It is an arithmetic number, because the mean of its divisors is an integer number (235824).

2⁸⁶⁴⁶⁷⁷ is an apocalyptic number.

It is an amenable number.

864677 is a deficient number, since it is larger than the sum of its proper divisors (78619).

864677 is a wasteful number, since it uses less digits than its factorization.

864677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78618.

The product of its digits is 56448, while the sum is 38.

The square root of 864677 is about 929.8800997978. The cubic root of 864677 is about 95.2689332557.

Subtracting from 864677 its reverse (776468), we obtain a square (88209 = 297²).

The spelling of 864677 in words is "eight hundred sixty-four thousand, six hundred seventy-seven".