199690689 has 8 divisors (see below), whose sum is σ = 290459232. Its totient is φ = 121024640.

The previous prime is 199690681. The next prime is 199690693. The reversal of 199690689 is 986096991.

199690689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 199690689 - 2³ = 199690681 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (199690681) 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, 3025584 + ... + 3025649.

It is an arithmetic number, because the mean of its divisors is an integer number (36307404).

Almost surely, 2^199690689 is an apocalyptic number.

It is an amenable number.

199690689 is a deficient number, since it is larger than the sum of its proper divisors (90768543).

199690689 is a wasteful number, since it uses less digits than its factorization.

199690689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6051247.

The product of its (nonzero) digits is 1889568, while the sum is 57.

The square root of 199690689 is about 14131.1955969762. The cubic root of 199690689 is about 584.5019151418.

The spelling of 199690689 in words is "one hundred ninety-nine million, six hundred ninety thousand, six hundred eighty-nine".