630648 has 48 divisors (see below), whose sum is σ = 1801800. Its totient is φ = 198720.

The previous prime is 630613. The next prime is 630659. The reversal of 630648 is 846036.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 630648.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1138 + ... + 1598.

2⁶³⁰⁶⁴⁸ 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 630648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (900900).

630648 is an abundant number, since it is smaller than the sum of its proper divisors (1171152).

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

630648 is a wasteful number, since it uses less digits than its factorization.

630648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 485 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 630648 is about 794.1334900380. The cubic root of 630648 is about 85.7555705879.

The spelling of 630648 in words is "six hundred thirty thousand, six hundred forty-eight".