620286688 has 96 divisors (see below), whose sum is σ = 1470873600. Its totient is φ = 257120640.

The previous prime is 620286671. The next prime is 620286697. The reversal of 620286688 is 886682026.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339345 + ... + 341167.

It is an arithmetic number, because the mean of its divisors is an integer number (15321600).

Almost surely, 2^620286688 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 620286688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (735436800).

620286688 is an abundant number, since it is smaller than the sum of its proper divisors (850586912).

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

620286688 is a wasteful number, since it uses less digits than its factorization.

620286688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885 (or 1863 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The square root of 620286688 is about 24905.5553642154. Note that the first 3 decimals coincide. The cubic root of 620286688 is about 852.8333078616.

The spelling of 620286688 in words is "six hundred twenty million, two hundred eighty-six thousand, six hundred eighty-eight".