667298 has 8 divisors (see below), whose sum is σ = 1010460. Its totient is φ = 330480.

The previous prime is 667283. The next prime is 667309. The reversal of 667298 is 892766.

667298 is nontrivially palindromic in base 8.

It can be written as a sum of positive squares in 2 ways, for example, as 573049 + 94249 = 757^2 + 307^2 .

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, 1313 + ... + 1748.

2⁶⁶⁷²⁹⁸ is an apocalyptic number.

667298 is a deficient number, since it is larger than the sum of its proper divisors (343162).

667298 is a wasteful number, since it uses less digits than its factorization.

667298 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3172.

The product of its digits is 36288, while the sum is 38.

The square root of 667298 is about 816.8831005719. The cubic root of 667298 is about 87.3856137967.

The spelling of 667298 in words is "six hundred sixty-seven thousand, two hundred ninety-eight".