516666 has 8 divisors (see below), whose sum is σ = 1033344. Its totient is φ = 172220.

The previous prime is 516653. The next prime is 516673. The reversal of 516666 is 666615.

It is a sphenic number, since it is the product of 3 distinct primes.

516666 is an admirable number.

516666 is a modest number, since divided by 666 gives 516 as remainder.

It is a nialpdrome in base 9.

It is an unprimeable number.

516666 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, 43050 + ... + 43061.

It is an arithmetic number, because the mean of its divisors is an integer number (129168).

2⁵¹⁶⁶⁶⁶ is an apocalyptic number.

516666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

516666 is a wasteful number, since it uses less digits than its factorization.

516666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86116.

The product of its digits is 6480, while the sum is 30.

The square root of 516666 is about 718.7948246892. The cubic root of 516666 is about 80.2422863094.

Subtracting from 516666 its sum of digits (30), we obtain a triangular number (516636 = T₁₀₁₆).

The spelling of 516666 in words is "five hundred sixteen thousand, six hundred sixty-six".