630514520 has 48 divisors (see below), whose sum is σ = 1469342160. Its totient is φ = 243496064.

The previous prime is 630514477. The next prime is 630514529. The reversal of 630514520 is 25415036.

It is a self number, because there is not a number n which added to its sum of digits gives 630514520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (630514529) 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, 24269 + ... + 43011.

It is an arithmetic number, because the mean of its divisors is an integer number (30611295).

Almost surely, 2^630514520 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 630514520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (734671080).

630514520 is an abundant number, since it is smaller than the sum of its proper divisors (838827640).

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

630514520 is a wasteful number, since it uses less digits than its factorization.

630514520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18812 (or 18779 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 630514520 is about 25110.0481879267. The cubic root of 630514520 is about 857.4951995357.

Adding to 630514520 its reverse (25415036), we get a palindrome (655929556).

The spelling of 630514520 in words is "six hundred thirty million, five hundred fourteen thousand, five hundred twenty".