520663886 has 8 divisors (see below), whose sum is σ = 791694624. Its totient is φ = 256765680.

The previous prime is 520663763. The next prime is 520663921. The reversal of 520663886 is 688366025.

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

It is a congruent number.

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, 1782950 + ... + 1783241.

It is an arithmetic number, because the mean of its divisors is an integer number (98961828).

Almost surely, 2^520663886 is an apocalyptic number.

520663886 is a deficient number, since it is larger than the sum of its proper divisors (271030738).

520663886 is a wasteful number, since it uses less digits than its factorization.

520663886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3566266.

The product of its (nonzero) digits is 414720, while the sum is 44.

The square root of 520663886 is about 22818.0605223143. The cubic root of 520663886 is about 804.4872245865.

The spelling of 520663886 in words is "five hundred twenty million, six hundred sixty-three thousand, eight hundred eighty-six".