298665 has 12 divisors (see below), whose sum is σ = 517764. Its totient is φ = 159264.

The previous prime is 298651. The next prime is 298667. The reversal of 298665 is 566892.

It can be written as a sum of positive squares in 2 ways, for example, as 41616 + 257049 = 204^2 + 507^2 .

It is not a de Polignac number, because 298665 - 2⁶ = 298601 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 298665.

It is not an unprimeable number, because it can be changed into a prime (298667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3274 + ... + 3363.

It is an arithmetic number, because the mean of its divisors is an integer number (43147).

2²⁹⁸⁶⁶⁵ is an apocalyptic number.

It is an amenable number.

298665 is a deficient number, since it is larger than the sum of its proper divisors (219099).

298665 is a wasteful number, since it uses less digits than its factorization.

298665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6648 (or 6645 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 298665 is about 546.5025160052. The cubic root of 298665 is about 66.8438481282.

The spelling of 298665 in words is "two hundred ninety-eight thousand, six hundred sixty-five".