623955456 has 240 divisors, whose sum is σ = 1909949184. Its totient is φ = 195858432.

The previous prime is 623955443. The next prime is 623955463. The reversal of 623955456 is 654559326.

623955456 is a `hidden beast` number, since 62 + 39 + 554 + 5 + 6 = 666.

It is a super-2 number, since 2×623955456² = 778640822144335872, which contains 22 as substring.

Its product of digits (972000) is a multiple of the sum of its prime divisors (162).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9312735 + ... + 9312801.

Almost surely, 2^623955456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 623955456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (954974592).

623955456 is an abundant number, since it is smaller than the sum of its proper divisors (1285993728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

623955456 is a wasteful number, since it uses less digits than its factorization.

623955456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 162 counting only the distinct ones).

The product of its digits is 972000, while the sum is 45.

The square root of 623955456 is about 24979.1003841211. The cubic root of 623955456 is about 854.5114023826.

The spelling of 623955456 in words is "six hundred twenty-three million, nine hundred fifty-five thousand, four hundred fifty-six".