166368863 has 2 divisors, whose sum is σ = 166368864. Its totient is φ = 166368862.

The previous prime is 166368859. The next prime is 166368889. The reversal of 166368863 is 368863661.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166368863 - 2² = 166368859 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166368893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83184431 + 83184432.

It is an arithmetic number, because the mean of its divisors is an integer number (83184432).

Almost surely, 2^166368863 is an apocalyptic number.

166368863 is a deficient number, since it is larger than the sum of its proper divisors (1).

166368863 is an equidigital number, since it uses as much as digits as its factorization.

166368863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 47.

The square root of 166368863 is about 12898.4054440849. The cubic root of 166368863 is about 549.9932373824.

The spelling of 166368863 in words is "one hundred sixty-six million, three hundred sixty-eight thousand, eight hundred sixty-three".