196906687 has 2 divisors, whose sum is σ = 196906688. Its totient is φ = 196906686.

The previous prime is 196906679. The next prime is 196906691. The reversal of 196906687 is 786609691.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 196906687 - 2³ = 196906679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (196906667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98453343 + 98453344.

It is an arithmetic number, because the mean of its divisors is an integer number (98453344).

Almost surely, 2^196906687 is an apocalyptic number.

196906687 is a deficient number, since it is larger than the sum of its proper divisors (1).

196906687 is an equidigital number, since it uses as much as digits as its factorization.

196906687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 52.

The square root of 196906687 is about 14032.3443159010. The cubic root of 196906687 is about 581.7729015994.

The spelling of 196906687 in words is "one hundred ninety-six million, nine hundred six thousand, six hundred eighty-seven".