622444 has 12 divisors (see below), whose sum is σ = 1107568. Its totient is φ = 306000.

The previous prime is 622423. The next prime is 622477. The reversal of 622444 is 444226.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1032 + ... + 1519.

2⁶²²⁴⁴⁴ is an apocalyptic number.

It is an amenable number.

622444 is a deficient number, since it is larger than the sum of its proper divisors (485124).

622444 is a wasteful number, since it uses less digits than its factorization.

622444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2616 (or 2614 counting only the distinct ones).

The product of its digits is 1536, while the sum is 22.

The square root of 622444 is about 788.9512025468. The cubic root of 622444 is about 85.3820861277.

The spelling of 622444 in words is "six hundred twenty-two thousand, four hundred forty-four".