496391666 has 8 divisors (see below), whose sum is σ = 770263020. Its totient is φ = 239637328.

The previous prime is 496391659. The next prime is 496391683. The reversal of 496391666 is 666193694.

It can be written as a sum of positive squares in 2 ways, for example, as 448380625 + 48011041 = 21175^2 + 6929^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4279181 + ... + 4279296.

Almost surely, 2^496391666 is an apocalyptic number.

496391666 is a deficient number, since it is larger than the sum of its proper divisors (273871354).

496391666 is a wasteful number, since it uses less digits than its factorization.

496391666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8558508.

The product of its digits is 1259712, while the sum is 50.

The square root of 496391666 is about 22279.8488774049. The cubic root of 496391666 is about 791.7866235118.

The spelling of 496391666 in words is "four hundred ninety-six million, three hundred ninety-one thousand, six hundred sixty-six".