199996757 has 2 divisors, whose sum is σ = 199996758. Its totient is φ = 199996756.

The previous prime is 199996733. The next prime is 199996759. The reversal of 199996757 is 757699991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152744881 + 47251876 = 12359^2 + 6874^2 .

It is a cyclic number.

It is not a de Polignac number, because 199996757 - 2¹⁴ = 199980373 is a prime.

Together with 199996759, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 199996757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199996759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99998378 + 99998379.

It is an arithmetic number, because the mean of its divisors is an integer number (99998379).

Almost surely, 2^199996757 is an apocalyptic number.

It is an amenable number.

199996757 is a deficient number, since it is larger than the sum of its proper divisors (1).

199996757 is an equidigital number, since it uses as much as digits as its factorization.

199996757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9644670, while the sum is 62.

The square root of 199996757 is about 14142.0209659016. The cubic root of 199996757 is about 584.8003867623.

The spelling of 199996757 in words is "one hundred ninety-nine million, nine hundred ninety-six thousand, seven hundred fifty-seven".