199698863 has 24 divisors (see below), whose sum is σ = 251370000. Its totient is φ = 157248000.

The previous prime is 199698853. The next prime is 199698887. The reversal of 199698863 is 368896991.

It is not a de Polignac number, because 199698863 - 2⁶ = 199698799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199698853) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159263 + ... + 160511.

It is an arithmetic number, because the mean of its divisors is an integer number (10473750).

Almost surely, 2^199698863 is an apocalyptic number.

199698863 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

199698863 is a deficient number, since it is larger than the sum of its proper divisors (51671137).

199698863 is a wasteful number, since it uses less digits than its factorization.

199698863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527 (or 1520 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 59.

The square root of 199698863 is about 14131.4848122906. The cubic root of 199698863 is about 584.5098902315.

The spelling of 199698863 in words is "one hundred ninety-nine million, six hundred ninety-eight thousand, eight hundred sixty-three".