620956 has 24 divisors (see below), whose sum is σ = 1264256. Its totient is φ = 261360.

The previous prime is 620947. The next prime is 620957. The reversal of 620956 is 659026.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620957) 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 7 ways as a sum of consecutive naturals, for example, 1711 + ... + 2041.

2⁶²⁰⁹⁵⁶ is an apocalyptic number.

It is an amenable number.

620956 is an abundant number, since it is smaller than the sum of its proper divisors (643300).

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

620956 is a wasteful number, since it uses less digits than its factorization.

620956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 620956 is about 788.0076141764. The cubic root of 620956 is about 85.3139943697.

Subtracting from 620956 its product of nonzero digits (3240), we obtain a palindrome (617716).

The spelling of 620956 in words is "six hundred twenty thousand, nine hundred fifty-six".