624799980 has 360 divisors, whose sum is σ = 2419357248. Its totient is φ = 134120448.

The previous prime is 624799979. The next prime is 624800017. The reversal of 624799980 is 89997426.

624799980 is a `hidden beast` number, since 6 + 2 + 479 + 99 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1349229 + ... + 1349691.

Almost surely, 2^624799980 is an apocalyptic number.

624799980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 624799980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1209678624).

624799980 is an abundant number, since it is smaller than the sum of its proper divisors (1794557268).

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

624799980 is a wasteful number, since it uses less digits than its factorization.

624799980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The square root of 624799980 is about 24995.9992798848. Note that the first 3 decimals coincide. The cubic root of 624799980 is about 854.8967557698.

The spelling of 624799980 in words is "six hundred twenty-four million, seven hundred ninety-nine thousand, nine hundred eighty".