199105764 has 96 divisors (see below), whose sum is σ = 564762240. Its totient is φ = 53760000.

The previous prime is 199105763. The next prime is 199105783. The reversal of 199105764 is 467501991.

It is not an unprimeable number, because it can be changed into a prime (199105763) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47764 + ... + 51764.

It is an arithmetic number, because the mean of its divisors is an integer number (5882940).

Almost surely, 2^199105764 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 199105764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282381120).

199105764 is an abundant number, since it is smaller than the sum of its proper divisors (365656476).

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

199105764 is a wasteful number, since it uses less digits than its factorization.

199105764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4061 (or 4059 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 199105764 is about 14110.4841872985. The cubic root of 199105764 is about 583.9306580896.

The spelling of 199105764 in words is "one hundred ninety-nine million, one hundred five thousand, seven hundred sixty-four".