620858 has 16 divisors (see below), whose sum is σ = 1083264. Its totient is φ = 261360.

The previous prime is 620849. The next prime is 620869. The reversal of 620858 is 858026.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 620858.

It is an unprimeable 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, 491 + ... + 1217.

It is an arithmetic number, because the mean of its divisors is an integer number (67704).

2⁶²⁰⁸⁵⁸ is an apocalyptic number.

620858 is a deficient number, since it is larger than the sum of its proper divisors (462406).

620858 is a wasteful number, since it uses less digits than its factorization.

620858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 620858 is about 787.9454295825. The cubic root of 620858 is about 85.3095060156.

The spelling of 620858 in words is "six hundred twenty thousand, eight hundred fifty-eight".