630620 has 12 divisors (see below), whose sum is σ = 1324344. Its totient is φ = 252240.

The previous prime is 630613. The next prime is 630659. The reversal of 630620 is 26036.

It is a congruent number.

It is an unprimeable number.

630620 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15746 + ... + 15785.

It is an arithmetic number, because the mean of its divisors is an integer number (110362).

2⁶³⁰⁶²⁰ is an apocalyptic number.

It is an amenable number.

630620 is an abundant number, since it is smaller than the sum of its proper divisors (693724).

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

630620 is a wasteful number, since it uses less digits than its factorization.

630620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31540 (or 31538 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 630620 is about 794.1158605644. The cubic root of 630620 is about 85.7543014216.

Adding to 630620 its reverse (26036), we get a palindrome (656656).

The spelling of 630620 in words is "six hundred thirty thousand, six hundred twenty".