199664498 has 16 divisors (see below), whose sum is σ = 327192480. Its totient is φ = 90626400.

The previous prime is 199664497. The next prime is 199664501. The reversal of 199664498 is 894466991.

It is not an unprimeable number, because it can be changed into a prime (199664497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10118 + ... + 22398.

It is an arithmetic number, because the mean of its divisors is an integer number (20449530).

Almost surely, 2^199664498 is an apocalyptic number.

199664498 is a deficient number, since it is larger than the sum of its proper divisors (127527982).

199664498 is a wasteful number, since it uses less digits than its factorization.

199664498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13033.

The product of its digits is 3359232, while the sum is 56.

The square root of 199664498 is about 14130.2688580225. The cubic root of 199664498 is about 584.4763600211.

The spelling of 199664498 in words is "one hundred ninety-nine million, six hundred sixty-four thousand, four hundred ninety-eight".