630320 has 20 divisors (see below), whose sum is σ = 1465680. Its totient is φ = 252096.

The previous prime is 630319. The next prime is 630349. The reversal of 630320 is 23036.

It is a tau number, because it is divible by the number of its divisors (20).

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 630295 and 630304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3860 + ... + 4019.

It is an arithmetic number, because the mean of its divisors is an integer number (73284).

2⁶³⁰³²⁰ is an apocalyptic number.

It is an amenable number.

630320 is an abundant number, since it is smaller than the sum of its proper divisors (835360).

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

630320 is a wasteful number, since it uses less digits than its factorization.

630320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7892 (or 7886 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 630320 is about 793.9269487806. The cubic root of 630320 is about 85.7407008533.

Adding to 630320 its reverse (23036), we get a palindrome (653356).

The spelling of 630320 in words is "six hundred thirty thousand, three hundred twenty".