620788 has 12 divisors (see below), whose sum is σ = 1241632. Its totient is φ = 266040.

The previous prime is 620777. The next prime is 620813. The reversal of 620788 is 887026.

620788 is an admirable number.

It is a congruent number.

It is an unprimeable number.

620788 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11058 + ... + 11113.

2⁶²⁰⁷⁸⁸ is an apocalyptic number.

It is an amenable number.

620788 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

620788 is a wasteful number, since it uses less digits than its factorization.

620788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22182 (or 22180 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 620788 is about 787.9010090106. The cubic root of 620788 is about 85.3062997592.

The spelling of 620788 in words is "six hundred twenty thousand, seven hundred eighty-eight".