199680808 has 8 divisors (see below), whose sum is σ = 374401530. Its totient is φ = 99840400.

The previous prime is 199680797. The next prime is 199680809. The reversal of 199680808 is 808086991.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 146361604 + 53319204 = 12098^2 + 7302^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (199680809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12480043 + ... + 12480058.

Almost surely, 2^199680808 is an apocalyptic number.

It is an amenable number.

199680808 is a deficient number, since it is larger than the sum of its proper divisors (174720722).

199680808 is a wasteful number, since it uses less digits than its factorization.

199680808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24960107 (or 24960103 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 49.

The square root of 199680808 is about 14130.8459760907. The cubic root of 199680808 is about 584.4922743006.

The spelling of 199680808 in words is "one hundred ninety-nine million, six hundred eighty thousand, eight hundred eight".