626864 has 40 divisors (see below), whose sum is σ = 1443360. Its totient is φ = 258048.

The previous prime is 626861. The next prime is 626887. The reversal of 626864 is 468626.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 626864.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 626864.

It is not an unprimeable number, because it can be changed into a prime (626861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3152 + ... + 3344.

It is an arithmetic number, because the mean of its divisors is an integer number (36084).

2⁶²⁶⁸⁶⁴ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 626864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (721680).

626864 is an abundant number, since it is smaller than the sum of its proper divisors (816496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

626864 is a wasteful number, since it uses less digits than its factorization.

626864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 231 counting only the distinct ones).

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

The square root of 626864 is about 791.7474344764. The cubic root of 626864 is about 85.5837101794.

The spelling of 626864 in words is "six hundred twenty-six thousand, eight hundred sixty-four".