520039606 has 4 divisors (see below), whose sum is σ = 780059412. Its totient is φ = 260019802.

The previous prime is 520039603. The next prime is 520039649. The reversal of 520039606 is 606930025.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520039603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130009900 + ... + 130009903.

It is an arithmetic number, because the mean of its divisors is an integer number (195014853).

Almost surely, 2^520039606 is an apocalyptic number.

520039606 is a deficient number, since it is larger than the sum of its proper divisors (260019806).

520039606 is a wasteful number, since it uses less digits than its factorization.

520039606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260019805.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 520039606 is about 22804.3769044453. The cubic root of 520039606 is about 804.1655672078.

The spelling of 520039606 in words is "five hundred twenty million, thirty-nine thousand, six hundred six".