199100685 has 64 divisors (see below), whose sum is σ = 391163904. Its totient is φ = 84403200.

The previous prime is 199100669. The next prime is 199100723. The reversal of 199100685 is 586001991.

199100685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 199100685 - 2⁴ = 199100669 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 125950 + ... + 127520.

It is an arithmetic number, because the mean of its divisors is an integer number (6111936).

Almost surely, 2^199100685 is an apocalyptic number.

199100685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

199100685 is a deficient number, since it is larger than the sum of its proper divisors (192063219).

199100685 is a wasteful number, since it uses less digits than its factorization.

199100685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674.

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 199100685 is about 14110.3042135880. The cubic root of 199100685 is about 583.9256928741.

The spelling of 199100685 in words is "one hundred ninety-nine million, one hundred thousand, six hundred eighty-five".