634260520 has 16 divisors (see below), whose sum is σ = 1427086260. Its totient is φ = 253704192.

The previous prime is 634260511. The next prime is 634260533. The reversal of 634260520 is 25062436.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 596043396 + 38217124 = 24414^2 + 6182^2 .

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, 7928217 + ... + 7928296.

Almost surely, 2^634260520 is an apocalyptic number.

It is an amenable number.

634260520 is an abundant number, since it is smaller than the sum of its proper divisors (792825740).

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

634260520 is a wasteful number, since it uses less digits than its factorization.

634260520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15856524 (or 15856520 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 634260520 is about 25184.5293781718. The cubic root of 634260520 is about 859.1900251932.

The spelling of 634260520 in words is "six hundred thirty-four million, two hundred sixty thousand, five hundred twenty".