630020 has 36 divisors (see below), whose sum is σ = 1418340. Its totient is φ = 235008.

The previous prime is 630017. The next prime is 630023. The reversal of 630020 is 20036.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (630017) and next prime (630023).

It can be written as a sum of positive squares in 6 ways, for example, as 64516 + 565504 = 254^2 + 752^2 .

It is a junction number, because it is equal to n+sod(n) for n = 629983 and 630010.

It is not an unprimeable number, because it can be changed into a prime (630023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5726 + ... + 5834.

2⁶³⁰⁰²⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 630020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (709170).

630020 is an abundant number, since it is smaller than the sum of its proper divisors (788320).

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

630020 is a wasteful number, since it uses less digits than its factorization.

630020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 630020 is about 793.7379920352. The cubic root of 630020 is about 85.7270959690.

Adding to 630020 its reverse (20036), we get a palindrome (650056).

The spelling of 630020 in words is "six hundred thirty thousand, twenty".