517868 has 24 divisors (see below), whose sum is σ = 1020768. Its totient is φ = 228096.

The previous prime is 517861. The next prime is 517873. The reversal of 517868 is 868715.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (517861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 980 + ... + 1412.

It is an arithmetic number, because the mean of its divisors is an integer number (42532).

2⁵¹⁷⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

517868 is a deficient number, since it is larger than the sum of its proper divisors (502900).

517868 is a wasteful number, since it uses less digits than its factorization.

517868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473 (or 471 counting only the distinct ones).

The product of its digits is 13440, while the sum is 35.

The square root of 517868 is about 719.6304607227. The cubic root of 517868 is about 80.3044647949.

The spelling of 517868 in words is "five hundred seventeen thousand, eight hundred sixty-eight".