199342668 has 96 divisors (see below), whose sum is σ = 548584960. Its totient is φ = 55157760.

The previous prime is 199342657. The next prime is 199342681. The reversal of 199342668 is 866243991.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 827028 + ... + 827268.

Almost surely, 2^199342668 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 199342668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274292480).

199342668 is an abundant number, since it is smaller than the sum of its proper divisors (349242292).

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

199342668 is a wasteful number, since it uses less digits than its factorization.

199342668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527 (or 525 counting only the distinct ones).

The product of its digits is 559872, while the sum is 48.

The square root of 199342668 is about 14118.8763008959. The cubic root of 199342668 is about 584.1621609793.

The spelling of 199342668 in words is "one hundred ninety-nine million, three hundred forty-two thousand, six hundred sixty-eight".