620808 has 16 divisors (see below), whose sum is σ = 1552080. Its totient is φ = 206928.

The previous prime is 620777. The next prime is 620813. The reversal of 620808 is 808026.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 25867 = 620808 / (6 + 2 + 0 + 8 + 0 + 8).

It is a plaindrome in base 14.

It is an unprimeable number.

620808 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12910 + ... + 12957.

It is an arithmetic number, because the mean of its divisors is an integer number (97005).

2⁶²⁰⁸⁰⁸ is an apocalyptic number.

It is an amenable number.

620808 is an abundant number, since it is smaller than the sum of its proper divisors (931272).

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

620808 is a wasteful number, since it uses less digits than its factorization.

620808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25876 (or 25872 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 620808 is about 787.9137008582. The cubic root of 620808 is about 85.3072158570.

The spelling of 620808 in words is "six hundred twenty thousand, eight hundred eight".