343000663 has 2 divisors, whose sum is σ = 343000664. Its totient is φ = 343000662.

The previous prime is 343000649. The next prime is 343000667. The reversal of 343000663 is 366000343.

It is a strong prime.

It is an emirp because it is prime and its reverse (366000343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343000663 - 2⁵ = 343000631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343000667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171500331 + 171500332.

It is an arithmetic number, because the mean of its divisors is an integer number (171500332).

Almost surely, 2^343000663 is an apocalyptic number.

343000663 is a deficient number, since it is larger than the sum of its proper divisors (1).

343000663 is an equidigital number, since it uses as much as digits as its factorization.

343000663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 25.

The square root of 343000663 is about 18520.2770767610. The cubic root of 343000663 is about 700.0004510201. Note that the first 3 decimals are identical.

The spelling of 343000663 in words is "three hundred forty-three million, six hundred sixty-three", and thus it is an aban number.