620644282600 has 96 divisors (see below), whose sum is σ = 1482356373120. Its totient is φ = 241489624320.

The previous prime is 620644282591. The next prime is 620644282607. The reversal of 620644282600 is 6282446026.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (620644282607) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42786949 + ... + 42801451.

It is an arithmetic number, because the mean of its divisors is an integer number (15441212220).

Almost surely, 2^620644282600 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620644282600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (741178186560).

620644282600 is an abundant number, since it is smaller than the sum of its proper divisors (861712090520).

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

620644282600 is a wasteful number, since it uses less digits than its factorization.

620644282600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20339 (or 20330 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 40.

The spelling of 620644282600 in words is "six hundred twenty billion, six hundred forty-four million, two hundred eighty-two thousand, six hundred".