198346663 has 2 divisors, whose sum is σ = 198346664. Its totient is φ = 198346662.

The previous prime is 198346661. The next prime is 198346693. The reversal of 198346663 is 366643891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198346663 - 2¹ = 198346661 is a prime.

Together with 198346661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198346661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99173331 + 99173332.

It is an arithmetic number, because the mean of its divisors is an integer number (99173332).

Almost surely, 2^198346663 is an apocalyptic number.

198346663 is a deficient number, since it is larger than the sum of its proper divisors (1).

198346663 is an equidigital number, since it uses as much as digits as its factorization.

198346663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 46.

The square root of 198346663 is about 14083.5600257889. The cubic root of 198346663 is about 583.1876244141.

The spelling of 198346663 in words is "one hundred ninety-eight million, three hundred forty-six thousand, six hundred sixty-three".