520500687 has 48 divisors (see below), whose sum is σ = 855930240. Its totient is φ = 279744192.

The previous prime is 520500683. The next prime is 520500691. The reversal of 520500687 is 786005025.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (520500683) and next prime (520500691).

It is not a de Polignac number, because 520500687 - 2² = 520500683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520500683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 437908 + ... + 439094.

It is an arithmetic number, because the mean of its divisors is an integer number (17831880).

Almost surely, 2^520500687 is an apocalyptic number.

520500687 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

520500687 is a deficient number, since it is larger than the sum of its proper divisors (335429553).

520500687 is a wasteful number, since it uses less digits than its factorization.

520500687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380 (or 1373 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 520500687 is about 22814.4841493293. The cubic root of 520500687 is about 804.4031618902.

The spelling of 520500687 in words is "five hundred twenty million, five hundred thousand, six hundred eighty-seven".