623979916560 has 3200 divisors, whose sum is σ = 3150638346240. Its totient is φ = 110182809600.

The previous prime is 623979916537. The next prime is 623979916589. The reversal of 623979916560 is 65619979326.

623979916560 is a `hidden beast` number, since 62 + 3 + 9 + 7 + 9 + 9 + 1 + 6 + 560 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 639 ways as a sum of consecutive naturals, for example, 7517830279 + ... + 7517830361.

Almost surely, 2^623979916560 is an apocalyptic number.

623979916560 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 623979916560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1575319173120).

623979916560 is an abundant number, since it is smaller than the sum of its proper divisors (2526658429680).

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

623979916560 is a wasteful number, since it uses less digits than its factorization.

623979916560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 33067440, while the sum is 63.

The spelling of 623979916560 in words is "six hundred twenty-three billion, nine hundred seventy-nine million, nine hundred sixteen thousand, five hundred sixty".