499998566 has 32 divisors (see below), whose sum is σ = 817689600. Its totient is φ = 228428640.

The previous prime is 499998553. The next prime is 499998571. The reversal of 499998566 is 665899994.

It is a Curzon number.

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 in 15 ways as a sum of consecutive naturals, for example, 493076 + ... + 494088.

It is an arithmetic number, because the mean of its divisors is an integer number (25552800).

Almost surely, 2^499998566 is an apocalyptic number.

499998566 is a deficient number, since it is larger than the sum of its proper divisors (317691034).

499998566 is a wasteful number, since it uses less digits than its factorization.

499998566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484.

The product of its digits is 37791360, while the sum is 65.

The square root of 499998566 is about 22360.6477097601. The cubic root of 499998566 is about 793.6997672057.

The spelling of 499998566 in words is "four hundred ninety-nine million, nine hundred ninety-eight thousand, five hundred sixty-six".