864475 has 12 divisors (see below), whose sum is σ = 1083760. Its totient is φ = 684000.

The previous prime is 864449. The next prime is 864491. The reversal of 864475 is 574468.

It is not a de Polignac number, because 864475 - 2¹⁵ = 831707 is a prime.

864475 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 864475.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3661 + ... + 3889.

2⁸⁶⁴⁴⁷⁵ is an apocalyptic number.

864475 is a deficient number, since it is larger than the sum of its proper divisors (219285).

864475 is a wasteful number, since it uses less digits than its factorization.

864475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 385 counting only the distinct ones).

The product of its digits is 26880, while the sum is 34.

The square root of 864475 is about 929.7714772997. The cubic root of 864475 is about 95.2615139830.

The spelling of 864475 in words is "eight hundred sixty-four thousand, four hundred seventy-five".