199680967 has 2 divisors, whose sum is σ = 199680968. Its totient is φ = 199680966.

The previous prime is 199680959. The next prime is 199680989. The reversal of 199680967 is 769086991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199680967 - 2³ = 199680959 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199680907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99840483 + 99840484.

It is an arithmetic number, because the mean of its divisors is an integer number (99840484).

Almost surely, 2^199680967 is an apocalyptic number.

199680967 is a deficient number, since it is larger than the sum of its proper divisors (1).

199680967 is an equidigital number, since it uses as much as digits as its factorization.

199680967 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1469664, while the sum is 55.

The square root of 199680967 is about 14130.8516020798. The cubic root of 199680967 is about 584.4924294386.

The spelling of 199680967 in words is "one hundred ninety-nine million, six hundred eighty thousand, nine hundred sixty-seven".