623499972 has 48 divisors (see below), whose sum is σ = 1538396160. Its totient is φ = 195995808.

The previous prime is 623499949. The next prime is 623500027. The reversal of 623499972 is 279994326.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44713 + ... + 56975.

It is an arithmetic number, because the mean of its divisors is an integer number (32049920).

Almost surely, 2^623499972 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 623499972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (769198080).

623499972 is an abundant number, since it is smaller than the sum of its proper divisors (914896188).

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

623499972 is a wasteful number, since it uses less digits than its factorization.

623499972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12512 (or 12510 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 51.

The square root of 623499972 is about 24969.9814176943. The cubic root of 623499972 is about 854.3034222483.

The spelling of 623499972 in words is "six hundred twenty-three million, four hundred ninety-nine thousand, nine hundred seventy-two".