168997207 has 2 divisors, whose sum is σ = 168997208. Its totient is φ = 168997206.

The previous prime is 168997201. The next prime is 168997211. The reversal of 168997207 is 702799861.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 168997207 - 2⁷ = 168997079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168997201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84498603 + 84498604.

It is an arithmetic number, because the mean of its divisors is an integer number (84498604).

Almost surely, 2^168997207 is an apocalyptic number.

168997207 is a deficient number, since it is larger than the sum of its proper divisors (1).

168997207 is an equidigital number, since it uses as much as digits as its factorization.

168997207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024, while the sum is 49.

The square root of 168997207 is about 12999.8925764792. The cubic root of 168997207 is about 552.8744356178.

The spelling of 168997207 in words is "one hundred sixty-eight million, nine hundred ninety-seven thousand, two hundred seven".