621568676880 has 480 divisors, whose sum is σ = 2211214187520. Its totient is φ = 156253224960.

The previous prime is 621568676851. The next prime is 621568676903. The reversal of 621568676880 is 88676865126.

621568676880 is a `hidden beast` number, since 6 + 2 + 1 + 568 + 6 + 7 + 68 + 8 + 0 = 666.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 148805352 + ... + 148809528.

It is an arithmetic number, because the mean of its divisors is an integer number (4606696224).

Almost surely, 2^621568676880 is an apocalyptic number.

621568676880 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 621568676880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1105607093760).

621568676880 is an abundant number, since it is smaller than the sum of its proper divisors (1589645510640).

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

621568676880 is a wasteful number, since it uses less digits than its factorization.

621568676880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4399 (or 4390 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 63.

The spelling of 621568676880 in words is "six hundred twenty-one billion, five hundred sixty-eight million, six hundred seventy-six thousand, eight hundred eighty".