199709064 has 96 divisors (see below), whose sum is σ = 594004320. Its totient is φ = 62643456.

The previous prime is 199709053. The next prime is 199709087. The reversal of 199709064 is 460907991.

199709064 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30027 + ... + 36069.

It is an arithmetic number, because the mean of its divisors is an integer number (6187545).

Almost surely, 2^199709064 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 199709064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297002160).

199709064 is an abundant number, since it is smaller than the sum of its proper divisors (394295256).

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

199709064 is a wasteful number, since it uses less digits than its factorization.

199709064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6081 (or 6065 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 199709064 is about 14131.8457393222. The cubic root of 199709064 is about 584.5198426899.

The spelling of 199709064 in words is "one hundred ninety-nine million, seven hundred nine thousand, sixty-four".