622456 has 16 divisors (see below), whose sum is σ = 1207800. Its totient is φ = 300384.

The previous prime is 622423. The next prime is 622477. The reversal of 622456 is 654226.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 622456.

It is a congruent number.

It is an unprimeable number.

622456 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 1110 + ... + 1573.

2⁶²²⁴⁵⁶ is an apocalyptic number.

It is an amenable number.

622456 is a deficient number, since it is larger than the sum of its proper divisors (585344).

622456 is a wasteful number, since it uses less digits than its factorization.

622456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2718 (or 2714 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 622456 is about 788.9588075432. The cubic root of 622456 is about 85.3826348135.

The spelling of 622456 in words is "six hundred twenty-two thousand, four hundred fifty-six".