520630834 has 8 divisors (see below), whose sum is σ = 781778988. Its totient is φ = 260037840.

The previous prime is 520630807. The next prime is 520630841. The reversal of 520630834 is 438036025.

It can be written as a sum of positive squares in 2 ways, for example, as 479478609 + 41152225 = 21897^2 + 6415^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 520630796 and 520630805.

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, 136437 + ... + 140200.

Almost surely, 2^520630834 is an apocalyptic number.

520630834 is a deficient number, since it is larger than the sum of its proper divisors (261148154).

520630834 is a wasteful number, since it uses less digits than its factorization.

520630834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277580.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 520630834 is about 22817.3362599581. The cubic root of 520630834 is about 804.4702011445.

Adding to 520630834 its reverse (438036025), we get a palindrome (958666859).

The spelling of 520630834 in words is "five hundred twenty million, six hundred thirty thousand, eight hundred thirty-four".