516666806 has 4 divisors (see below), whose sum is σ = 775000212. Its totient is φ = 258333402.

The previous prime is 516666797. The next prime is 516666827. The reversal of 516666806 is 608666615.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129166700 + ... + 129166703.

It is an arithmetic number, because the mean of its divisors is an integer number (193750053).

Almost surely, 2^516666806 is an apocalyptic number.

516666806 is a deficient number, since it is larger than the sum of its proper divisors (258333406).

516666806 is a wasteful number, since it uses less digits than its factorization.

516666806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258333405.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 516666806 is about 22730.3058932343. The cubic root of 516666806 is about 802.4232803538.

The spelling of 516666806 in words is "five hundred sixteen million, six hundred sixty-six thousand, eight hundred six".