666802 has 8 divisors (see below), whose sum is σ = 1010412. Its totient is φ = 330000.

The previous prime is 666773. The next prime is 666811. The reversal of 666802 is 208666.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 654481 + 12321 = 809^2 + 111^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1449 + ... + 1852.

2⁶⁶⁶⁸⁰² is an apocalyptic number.

666802 is a deficient number, since it is larger than the sum of its proper divisors (343610).

666802 is a wasteful number, since it uses less digits than its factorization.

666802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 666802 is about 816.5794511252. The cubic root of 666802 is about 87.3639573015.

The spelling of 666802 in words is "six hundred sixty-six thousand, eight hundred two".