198888607 has 2 divisors, whose sum is σ = 198888608. Its totient is φ = 198888606.

The previous prime is 198888601. The next prime is 198888619. The reversal of 198888607 is 706888891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198888607 - 2⁷ = 198888479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198888601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99444303 + 99444304.

It is an arithmetic number, because the mean of its divisors is an integer number (99444304).

Almost surely, 2^198888607 is an apocalyptic number.

198888607 is a deficient number, since it is larger than the sum of its proper divisors (1).

198888607 is an equidigital number, since it uses as much as digits as its factorization.

198888607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1548288, while the sum is 55.

The square root of 198888607 is about 14102.7872067900. The cubic root of 198888607 is about 583.7182906261.

The spelling of 198888607 in words is "one hundred ninety-eight million, eight hundred eighty-eight thousand, six hundred seven".