620766706580 has 54 divisors (see below), whose sum is σ = 1336491977562. Its totient is φ = 242194045440.

The previous prime is 620766706559. The next prime is 620766706597. The reversal of 620766706580 is 85607667026.

It can be written as a sum of positive squares in 9 ways, for example, as 435024670096 + 185742036484 = 659564^2 + 430978^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 144462992 + ... + 144467288.

Almost surely, 2^620766706580 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 620766706580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (668245988781).

620766706580 is an abundant number, since it is smaller than the sum of its proper divisors (715725270982).

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

620766706580 is an frugal number, since it uses more digits than its factorization.

620766706580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8685 (or 4345 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 53.

The spelling of 620766706580 in words is "six hundred twenty billion, seven hundred sixty-six million, seven hundred six thousand, five hundred eighty".