520305706 has 8 divisors (see below), whose sum is σ = 826367940. Its totient is φ = 244849728.

The previous prime is 520305697. The next prime is 520305713. The reversal of 520305706 is 607503025.

It can be written as a sum of positive squares in 2 ways, for example, as 520250481 + 55225 = 22809^2 + 235^2 .

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

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, 7651521 + ... + 7651588.

Almost surely, 2^520305706 is an apocalyptic number.

520305706 is a deficient number, since it is larger than the sum of its proper divisors (306062234).

520305706 is a wasteful number, since it uses less digits than its factorization.

520305706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15303128.

The product of its (nonzero) digits is 6300, while the sum is 28.

The square root of 520305706 is about 22810.2105645695. The cubic root of 520305706 is about 804.3027054607.

The spelling of 520305706 in words is "five hundred twenty million, three hundred five thousand, seven hundred six".