198068693 has 2 divisors, whose sum is σ = 198068694. Its totient is φ = 198068692.

The previous prime is 198068687. The next prime is 198068701. The reversal of 198068693 is 396860891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180445489 + 17623204 = 13433^2 + 4198^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198068693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198068593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99034346 + 99034347.

It is an arithmetic number, because the mean of its divisors is an integer number (99034347).

Almost surely, 2^198068693 is an apocalyptic number.

It is an amenable number.

198068693 is a deficient number, since it is larger than the sum of its proper divisors (1).

198068693 is an equidigital number, since it uses as much as digits as its factorization.

198068693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 198068693 is about 14073.6879672671. The cubic root of 198068693 is about 582.9150638229.

The spelling of 198068693 in words is "one hundred ninety-eight million, sixty-eight thousand, six hundred ninety-three".