620997591060 has 384 divisors, whose sum is σ = 2535495782400. Its totient is φ = 122246807040.

The previous prime is 620997591031. The next prime is 620997591127. The reversal of 620997591060 is 60195799026.

620997591060 is a `hidden beast` number, since 620 + 9 + 9 + 7 + 5 + 9 + 1 + 0 + 6 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 620997590988 and 620997591006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 396994 + ... + 1183046.

It is an arithmetic number, because the mean of its divisors is an integer number (6602853600).

Almost surely, 2^620997591060 is an apocalyptic number.

620997591060 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 620997591060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1267747891200).

620997591060 is an abundant number, since it is smaller than the sum of its proper divisors (1914498191340).

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

620997591060 is a wasteful number, since it uses less digits than its factorization.

620997591060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786108 (or 786100 counting only the distinct ones).

The product of its (nonzero) digits is 1837080, while the sum is 54.

The spelling of 620997591060 in words is "six hundred twenty billion, nine hundred ninety-seven million, five hundred ninety-one thousand, sixty".