520711707 has 8 divisors (see below), whose sum is σ = 694677520. Its totient is φ = 346943520.

The previous prime is 520711699. The next prime is 520711721. The reversal of 520711707 is 707117025.

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

It is not a de Polignac number, because 520711707 - 2³ = 520711699 is a prime.

It is a super-2 number, since 2×520711707² = 542281363613707698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520711747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43144 + ... + 53877.

It is an arithmetic number, because the mean of its divisors is an integer number (86834690).

Almost surely, 2^520711707 is an apocalyptic number.

520711707 is a deficient number, since it is larger than the sum of its proper divisors (173965813).

520711707 is a wasteful number, since it uses less digits than its factorization.

520711707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98813.

The product of its (nonzero) digits is 3430, while the sum is 30.

The square root of 520711707 is about 22819.1083743428. The cubic root of 520711707 is about 804.5118535310.

The spelling of 520711707 in words is "five hundred twenty million, seven hundred eleven thousand, seven hundred seven".