620809875 has 96 divisors (see below), whose sum is σ = 1320763392. Its totient is φ = 274536000.

The previous prime is 620809867. The next prime is 620809913. The reversal of 620809875 is 578908026.

It is not a de Polignac number, because 620809875 - 2³ = 620809867 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 620809875.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 242854 + ... + 245396.

It is an arithmetic number, because the mean of its divisors is an integer number (13757952).

Almost surely, 2^620809875 is an apocalyptic number.

620809875 is an abundant number, since it is smaller than the sum of its proper divisors (699953517).

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

620809875 is a wasteful number, since it uses less digits than its factorization.

620809875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2602 (or 2589 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 620809875 is about 24916.0565700112. The cubic root of 620809875 is about 853.0730174018.

The spelling of 620809875 in words is "six hundred twenty million, eight hundred nine thousand, eight hundred seventy-five".