630660 has 48 divisors (see below), whose sum is σ = 1846656. Its totient is φ = 160512.

The previous prime is 630659. The next prime is 630677. The reversal of 630660 is 66036.

630660 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1152 + ... + 1608.

It is an arithmetic number, because the mean of its divisors is an integer number (38472).

2⁶³⁰⁶⁶⁰ is an apocalyptic number.

630660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 630660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (923328).

630660 is an abundant number, since it is smaller than the sum of its proper divisors (1215996).

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

630660 is a wasteful number, since it uses less digits than its factorization.

630660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 630660 is about 794.1410454069. The cubic root of 630660 is about 85.7561145048.

Adding to 630660 its reverse (66036), we get a palindrome (696696).

The spelling of 630660 in words is "six hundred thirty thousand, six hundred sixty".