620855746560 has 2016 divisors, whose sum is σ = 2773702189440. Its totient is φ = 132434362368.

The previous prime is 620855746543. The next prime is 620855746583. The reversal of 620855746560 is 65647558026.

620855746560 is a `hidden beast` number, since 6 + 2 + 0 + 8 + 5 + 5 + 74 + 6 + 560 = 666.

It is a tau number, because it is divible by the number of its divisors (2016).

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 = 620855746497 and 620855746506.

It is a congruent number.

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 143 ways as a sum of consecutive naturals, for example, 9266503647 + ... + 9266503713.

It is an arithmetic number, because the mean of its divisors is an integer number (1375844340).

Almost surely, 2^620855746560 is an apocalyptic number.

620855746560 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 620855746560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1386851094720).

620855746560 is an abundant number, since it is smaller than the sum of its proper divisors (2152846442880).

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

620855746560 is an equidigital number, since it uses as much as digits as its factorization.

620855746560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 54.

The spelling of 620855746560 in words is "six hundred twenty billion, eight hundred fifty-five million, seven hundred forty-six thousand, five hundred sixty".