620830 has 32 divisors (see below), whose sum is σ = 1310400. Its totient is φ = 211680.

The previous prime is 620827. The next prime is 620831. The reversal of 620830 is 38026.

It is a junction number, because it is equal to n+sod(n) for n = 620798 and 620807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620831) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3340 + ... + 3520.

It is an arithmetic number, because the mean of its divisors is an integer number (40950).

2⁶²⁰⁸³⁰ is an apocalyptic number.

620830 is an abundant number, since it is smaller than the sum of its proper divisors (689570).

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

620830 is a wasteful number, since it uses less digits than its factorization.

620830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 620830 is about 787.9276616543. The cubic root of 620830 is about 85.3082235419.

Adding to 620830 its reverse (38026), we get a palindrome (658856).

The spelling of 620830 in words is "six hundred twenty thousand, eight hundred thirty".