864626 has 16 divisors (see below), whose sum is σ = 1495680. Its totient is φ = 367200.

The previous prime is 864623. The next prime is 864629. The reversal of 864626 is 626468.

It is a happy number.

864626 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (864623) and next prime (864629).

It is an Ulam number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 864592 and 864601.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1910 + ... + 2318.

It is an arithmetic number, because the mean of its divisors is an integer number (93480).

2⁸⁶⁴⁶²⁶ is an apocalyptic number.

864626 is a deficient number, since it is larger than the sum of its proper divisors (631054).

864626 is a wasteful number, since it uses less digits than its factorization.

864626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569.

The product of its digits is 13824, while the sum is 32.

The square root of 864626 is about 929.8526765031. The cubic root of 864626 is about 95.2670601820.

It can be divided in two parts, 86462 and 6, that added together give a palindrome (86468).

The spelling of 864626 in words is "eight hundred sixty-four thousand, six hundred twenty-six".