630780 has 24 divisors (see below), whose sum is σ = 1766352. Its totient is φ = 168192.

The previous prime is 630737. The next prime is 630797. The reversal of 630780 is 87036.

It is a self number, because there is not a number n which added to its sum of digits gives 630780.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5197 + ... + 5316.

It is an arithmetic number, because the mean of its divisors is an integer number (73598).

2⁶³⁰⁷⁸⁰ is an apocalyptic number.

630780 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

630780 is an abundant number, since it is smaller than the sum of its proper divisors (1135572).

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

630780 is a wasteful number, since it uses less digits than its factorization.

630780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10525 (or 10523 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 630780 is about 794.2165951427. The cubic root of 630780 is about 85.7615532943.

The spelling of 630780 in words is "six hundred thirty thousand, seven hundred eighty".