199169664 has 64 divisors (see below), whose sum is σ = 530604000. Its totient is φ = 66194432.

The previous prime is 199169617. The next prime is 199169669. The reversal of 199169664 is 466961991.

199169664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (199169669) 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, 194947 + ... + 195965.

Almost surely, 2^199169664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199169664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265302000).

199169664 is an abundant number, since it is smaller than the sum of its proper divisors (331434336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199169664 is a wasteful number, since it uses less digits than its factorization.

199169664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545 (or 1533 counting only the distinct ones).

The product of its digits is 629856, while the sum is 51.

The square root of 199169664 is about 14112.7482794812. The cubic root of 199169664 is about 583.9931193285.

The spelling of 199169664 in words is "one hundred ninety-nine million, one hundred sixty-nine thousand, six hundred sixty-four".