666602086 has 8 divisors (see below), whose sum is σ = 1005489720. Its totient is φ = 331438848.

The previous prime is 666602063. The next prime is 666602093. The reversal of 666602086 is 680206666.

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

It is a congruent number.

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, 930651 + ... + 931366.

It is an arithmetic number, because the mean of its divisors is an integer number (125686215).

Almost surely, 2^666602086 is an apocalyptic number.

666602086 is a deficient number, since it is larger than the sum of its proper divisors (338887634).

666602086 is a wasteful number, since it uses less digits than its factorization.

666602086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1862198.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 666602086 is about 25818.6383451955. The cubic root of 666602086 is about 873.5522556210.

The spelling of 666602086 in words is "six hundred sixty-six million, six hundred two thousand, eighty-six".