620908 has 24 divisors (see below), whose sum is σ = 1203552. Its totient is φ = 278784.

The previous prime is 620887. The next prime is 620909. The reversal of 620908 is 809026.

It is not an unprimeable number, because it can be changed into a prime (620909) by changing a digit.

620908 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 7 ways as a sum of consecutive naturals, for example, 1366 + ... + 1762.

It is an arithmetic number, because the mean of its divisors is an integer number (50148).

2⁶²⁰⁹⁰⁸ is an apocalyptic number.

620908 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

620908 is a deficient number, since it is larger than the sum of its proper divisors (582644).

620908 is a wasteful number, since it uses less digits than its factorization.

620908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 620908 is about 787.9771570293. The cubic root of 620908 is about 85.3117960512.

The spelling of 620908 in words is "six hundred twenty thousand, nine hundred eight".