620436685220 has 384 divisors, whose sum is σ = 1598545428480. Its totient is φ = 199687680000.

The previous prime is 620436685213. The next prime is 620436685223. The reversal of 620436685220 is 22586634026.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (620436685223) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 723963032 + ... + 723963888.

It is an arithmetic number, because the mean of its divisors is an integer number (4162878720).

Almost surely, 2^620436685220 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 620436685220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (799272714240).

620436685220 is an abundant number, since it is smaller than the sum of its proper divisors (978108743260).

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

620436685220 is a wasteful number, since it uses less digits than its factorization.

620436685220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115 (or 1113 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 620436685220 in words is "six hundred twenty billion, four hundred thirty-six million, six hundred eighty-five thousand, two hundred twenty".