620636206320 has 640 divisors, whose sum is σ = 2369081702400. Its totient is φ = 148397432832.

The previous prime is 620636206301. The next prime is 620636206331. The reversal of 620636206320 is 23602636026.

620636206320 is a `hidden beast` number, since 6 + 2 + 0 + 6 + 3 + 620 + 6 + 3 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 137337021 + ... + 137341539.

It is an arithmetic number, because the mean of its divisors is an integer number (3701690160).

Almost surely, 2^620636206320 is an apocalyptic number.

620636206320 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 620636206320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1184540851200).

620636206320 is an abundant number, since it is smaller than the sum of its proper divisors (1748445496080).

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

620636206320 is a wasteful number, since it uses less digits than its factorization.

620636206320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4694 (or 4682 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 36.

The spelling of 620636206320 in words is "six hundred twenty billion, six hundred thirty-six million, two hundred six thousand, three hundred twenty".