864622 has 8 divisors (see below), whose sum is σ = 1414872. Its totient is φ = 393000.

The previous prime is 864613. The next prime is 864623. The reversal of 864622 is 226468.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864623) 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 3 ways as a sum of consecutive naturals, for example, 19629 + ... + 19672.

It is an arithmetic number, because the mean of its divisors is an integer number (176859).

2⁸⁶⁴⁶²² is an apocalyptic number.

864622 is a deficient number, since it is larger than the sum of its proper divisors (550250).

864622 is a wasteful number, since it uses less digits than its factorization.

864622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39314.

The product of its digits is 4608, while the sum is 28.

The square root of 864622 is about 929.8505256223. The cubic root of 864622 is about 95.2669132712.

It can be divided in two parts, 8646 and 22, that added together give a palindrome (8668).

The spelling of 864622 in words is "eight hundred sixty-four thousand, six hundred twenty-two".