623456 has 12 divisors (see below), whose sum is σ = 1227492. Its totient is φ = 311712.

The previous prime is 623437. The next prime is 623477. The reversal of 623456 is 654326.

It is a congruent number.

It is an unprimeable number.

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, 9710 + ... + 9773.

It is an arithmetic number, because the mean of its divisors is an integer number (102291).

2⁶²³⁴⁵⁶ is an apocalyptic number.

It is an amenable number.

623456 is a deficient number, since it is larger than the sum of its proper divisors (604036).

623456 is a wasteful number, since it uses less digits than its factorization.

623456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19493 (or 19485 counting only the distinct ones).

The product of its digits is 4320, while the sum is 26.

The square root of 623456 is about 789.5922998611. The cubic root of 623456 is about 85.4283338680.

The spelling of 623456 in words is "six hundred twenty-three thousand, four hundred fifty-six".