516668 has 12 divisors (see below), whose sum is σ = 928872. Its totient is φ = 251280.

The previous prime is 516653. The next prime is 516673. The reversal of 516668 is 866615.

It is a nialpdrome in base 9.

It is a congruent number.

It is an unprimeable number.

516668 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1598 + ... + 1893.

It is an arithmetic number, because the mean of its divisors is an integer number (77406).

2⁵¹⁶⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

516668 is a deficient number, since it is larger than the sum of its proper divisors (412204).

516668 is a wasteful number, since it uses less digits than its factorization.

516668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3532 (or 3530 counting only the distinct ones).

The product of its digits is 8640, while the sum is 32.

The square root of 516668 is about 718.7962159055. The cubic root of 516668 is about 80.2423898478.

Subtracting from 516668 its sum of digits (32), we obtain a triangular number (516636 = T₁₀₁₆).

The spelling of 516668 in words is "five hundred sixteen thousand, six hundred sixty-eight".