199568 has 10 divisors (see below), whose sum is σ = 386694. Its totient is φ = 99776.

The previous prime is 199567. The next prime is 199583. The reversal of 199568 is 865991.

It can be written as a sum of positive squares in only one way, i.e., 183184 + 16384 = 428^2 + 128^2 .

It is not an unprimeable number, because it can be changed into a prime (199567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6221 + ... + 6252.

2¹⁹⁹⁵⁶⁸ is an apocalyptic number.

It is an amenable number.

199568 is a deficient number, since it is larger than the sum of its proper divisors (187126).

199568 is a wasteful number, since it uses less digits than its factorization.

199568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12481 (or 12475 counting only the distinct ones).

The product of its digits is 19440, while the sum is 38.

The square root of 199568 is about 446.7303437198. The cubic root of 199568 is about 58.4382185562.

It can be divided in two parts, 199 and 568, that added together give a palindrome (767).

The spelling of 199568 in words is "one hundred ninety-nine thousand, five hundred sixty-eight".