198076643 has 2 divisors, whose sum is σ = 198076644. Its totient is φ = 198076642.

The previous prime is 198076633. The next prime is 198076657. The reversal of 198076643 is 346670891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 198076643 - 2¹⁴ = 198060259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 198076594 and 198076603.

It is not a weakly prime, because it can be changed into another prime (198076633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99038321 + 99038322.

It is an arithmetic number, because the mean of its divisors is an integer number (99038322).

Almost surely, 2^198076643 is an apocalyptic number.

198076643 is a deficient number, since it is larger than the sum of its proper divisors (1).

198076643 is an equidigital number, since it uses as much as digits as its factorization.

198076643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 198076643 is about 14073.9704063921. The cubic root of 198076643 is about 582.9228626538.

The spelling of 198076643 in words is "one hundred ninety-eight million, seventy-six thousand, six hundred forty-three".