520912685 has 8 divisors (see below), whose sum is σ = 645259776. Its totient is φ = 403287120.

The previous prime is 520912663. The next prime is 520912727. The reversal of 520912685 is 586219025.

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

It is not a de Polignac number, because 520912685 - 2²⁸ = 252477229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1680209 + ... + 1680518.

It is an arithmetic number, because the mean of its divisors is an integer number (80657472).

Almost surely, 2^520912685 is an apocalyptic number.

It is an amenable number.

520912685 is a deficient number, since it is larger than the sum of its proper divisors (124347091).

520912685 is a wasteful number, since it uses less digits than its factorization.

520912685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3360763.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 520912685 is about 22823.5116710816. The cubic root of 520912685 is about 804.6153454654.

The spelling of 520912685 in words is "five hundred twenty million, nine hundred twelve thousand, six hundred eighty-five".