516987 has 24 divisors (see below), whose sum is σ = 823680. Its totient is φ = 311040.

The previous prime is 516979. The next prime is 516991. The reversal of 516987 is 789615.

It is not a de Polignac number, because 516987 - 2³ = 516979 is a prime.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 516987.

It is not an unprimeable number, because it can be changed into a prime (516907) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4689 + ... + 4797.

It is an arithmetic number, because the mean of its divisors is an integer number (34320).

2⁵¹⁶⁹⁸⁷ is an apocalyptic number.

516987 is a deficient number, since it is larger than the sum of its proper divisors (306693).

516987 is a wasteful number, since it uses less digits than its factorization.

516987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163 (or 160 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 516987 is about 719.0180804403. The cubic root of 516987 is about 80.2589008091.

The spelling of 516987 in words is "five hundred sixteen thousand, nine hundred eighty-seven".