299998663 has 4 divisors (see below), whose sum is σ = 300066048. Its totient is φ = 299931280.

The previous prime is 299998661. The next prime is 299998679. The reversal of 299998663 is 366899992.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 299998663 - 2¹ = 299998661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (299998661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26503 + ... + 36088.

It is an arithmetic number, because the mean of its divisors is an integer number (75016512).

Almost surely, 2^299998663 is an apocalyptic number.

299998663 is a deficient number, since it is larger than the sum of its proper divisors (67385).

299998663 is an equidigital number, since it uses as much as digits as its factorization.

299998663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67384.

The product of its digits is 11337408, while the sum is 61.

The square root of 299998663 is about 17320.4694797803. The cubic root of 299998663 is about 669.4319556009.

The spelling of 299998663 in words is "two hundred ninety-nine million, nine hundred ninety-eight thousand, six hundred sixty-three".