199557696 has 112 divisors (see below), whose sum is σ = 602187264. Its totient is φ = 57778176.

The previous prime is 199557623. The next prime is 199557697. The reversal of 199557696 is 696755991.

It is not an unprimeable number, because it can be changed into a prime (199557697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40081 + ... + 44783.

It is an arithmetic number, because the mean of its divisors is an integer number (5376672).

Almost surely, 2^199557696 is an apocalyptic number.

199557696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199557696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301093632).

199557696 is an abundant number, since it is smaller than the sum of its proper divisors (402629568).

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

199557696 is a wasteful number, since it uses less digits than its factorization.

199557696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4748 (or 4738 counting only the distinct ones).

The product of its digits is 4592700, while the sum is 57.

The square root of 199557696 is about 14126.4891604390. The cubic root of 199557696 is about 584.3721278744.

The spelling of 199557696 in words is "one hundred ninety-nine million, five hundred fifty-seven thousand, six hundred ninety-six".