622904 has 8 divisors (see below), whose sum is σ = 1167960. Its totient is φ = 311448.

The previous prime is 622901. The next prime is 622927. The reversal of 622904 is 409226.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 622904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (622901) 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 as a sum of consecutive naturals, namely, 38924 + ... + 38939.

It is an arithmetic number, because the mean of its divisors is an integer number (145995).

2⁶²²⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

622904 is a deficient number, since it is larger than the sum of its proper divisors (545056).

622904 is a wasteful number, since it uses less digits than its factorization.

622904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77869 (or 77865 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 622904 is about 789.2426749739. The cubic root of 622904 is about 85.4031140372.

The spelling of 622904 in words is "six hundred twenty-two thousand, nine hundred four".