520702986 has 16 divisors (see below), whose sum is σ = 1041638400. Its totient is φ = 173528928.

The previous prime is 520702969. The next prime is 520702997. The reversal of 520702986 is 689207025.

It is a happy number.

It is a super-2 number, since 2×520702986² = 542263199258632392, which contains 22 as substring.

It is a Curzon 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, 36070 + ... + 48398.

It is an arithmetic number, because the mean of its divisors is an integer number (65102400).

Almost surely, 2^520702986 is an apocalyptic number.

520702986 is an abundant number, since it is smaller than the sum of its proper divisors (520935414).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

520702986 is a wasteful number, since it uses less digits than its factorization.

520702986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19373.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 520702986 is about 22818.9172836925. The cubic root of 520702986 is about 804.5073621224.

The spelling of 520702986 in words is "five hundred twenty million, seven hundred two thousand, nine hundred eighty-six".