666298 has 8 divisors (see below), whose sum is σ = 1058292. Its totient is φ = 313536.

The previous prime is 666277. The next prime is 666301. The reversal of 666298 is 892666.

666298 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 660969 + 5329 = 813^2 + 73^2 .

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, 9765 + ... + 9832.

2⁶⁶⁶²⁹⁸ is an apocalyptic number.

666298 is a deficient number, since it is larger than the sum of its proper divisors (391994).

666298 is a wasteful number, since it uses less digits than its factorization.

666298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19616.

The product of its digits is 31104, while the sum is 37.

The square root of 666298 is about 816.2707884030. The cubic root of 666298 is about 87.3419405045.

The spelling of 666298 in words is "six hundred sixty-six thousand, two hundred ninety-eight".