620398520 has 64 divisors (see below), whose sum is σ = 1597708800. Its totient is φ = 212388480.

The previous prime is 620398489. The next prime is 620398547. The reversal of 620398520 is 25893026.

It is a Harshad number since it is a multiple of its sum of digits (35).

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, 256115 + ... + 258525.

It is an arithmetic number, because the mean of its divisors is an integer number (24964200).

Almost surely, 2^620398520 is an apocalyptic number.

It is an amenable number.

620398520 is an abundant number, since it is smaller than the sum of its proper divisors (977310280).

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

620398520 is a wasteful number, since it uses less digits than its factorization.

620398520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3348 (or 3344 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 620398520 is about 24907.8003846185. The cubic root of 620398520 is about 852.8845574559.

The spelling of 620398520 in words is "six hundred twenty million, three hundred ninety-eight thousand, five hundred twenty".