864351 has 12 divisors (see below), whose sum is σ = 1295112. Its totient is φ = 576072.

The previous prime is 864341. The next prime is 864359. The reversal of 864351 is 153468.

It is not a de Polignac number, because 864351 - 2⁵ = 864319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 864351.

It is not an unprimeable number, because it can be changed into a prime (864359) by changing a digit.

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, 1536 + ... + 2021.

It is an arithmetic number, because the mean of its divisors is an integer number (107926).

2⁸⁶⁴³⁵¹ is an apocalyptic number.

864351 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

864351 is a deficient number, since it is larger than the sum of its proper divisors (430761).

864351 is an equidigital number, since it uses as much as digits as its factorization.

864351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3572 (or 3560 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 864351 is about 929.7047918560. The cubic root of 864351 is about 95.2569590055.

It can be divided in two parts, 86435 and 1, that added together give a square (86436 = 294²).

The spelling of 864351 in words is "eight hundred sixty-four thousand, three hundred fifty-one".