623422556 has 24 divisors (see below), whose sum is σ = 1116990000. Its totient is φ = 304354304.

The previous prime is 623422549. The next prime is 623422559. The reversal of 623422556 is 655224326.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623422559) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 26300 + ... + 44028.

It is an arithmetic number, because the mean of its divisors is an integer number (46541250).

Almost surely, 2^623422556 is an apocalyptic number.

It is an amenable number.

623422556 is a deficient number, since it is larger than the sum of its proper divisors (493567444).

623422556 is a wasteful number, since it uses less digits than its factorization.

623422556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17941 (or 17939 counting only the distinct ones).

The product of its digits is 86400, while the sum is 35.

The square root of 623422556 is about 24968.4311882024. The cubic root of 623422556 is about 854.2680629892.

The spelling of 623422556 in words is "six hundred twenty-three million, four hundred twenty-two thousand, five hundred fifty-six".