516840687 has 12 divisors (see below), whose sum is σ = 814415784. Its totient is φ = 313236720.

The previous prime is 516840677. The next prime is 516840691. The reversal of 516840687 is 786048615.

It is a happy number.

516840687 is a `hidden beast` number, since 5 + 168 + 406 + 87 = 666.

It is not a de Polignac number, because 516840687 - 2⁷ = 516840559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (516840677) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2610208 + ... + 2610405.

It is an arithmetic number, because the mean of its divisors is an integer number (67867982).

Almost surely, 2^516840687 is an apocalyptic number.

516840687 is a deficient number, since it is larger than the sum of its proper divisors (297575097).

516840687 is a wasteful number, since it uses less digits than its factorization.

516840687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5220630 (or 5220627 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 516840687 is about 22734.1304430145. The cubic root of 516840687 is about 802.5132871122.

The spelling of 516840687 in words is "five hundred sixteen million, eight hundred forty thousand, six hundred eighty-seven".