166836863 has 2 divisors, whose sum is σ = 166836864. Its totient is φ = 166836862.

The previous prime is 166836847. The next prime is 166836869. The reversal of 166836863 is 368638661.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166836863 - 2⁴ = 166836847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166836869) 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, 83418431 + 83418432.

It is an arithmetic number, because the mean of its divisors is an integer number (83418432).

Almost surely, 2^166836863 is an apocalyptic number.

166836863 is a deficient number, since it is larger than the sum of its proper divisors (1).

166836863 is an equidigital number, since it uses as much as digits as its factorization.

166836863 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 166836863 is about 12916.5344810441. The cubic root of 166836863 is about 550.5084697247.

The spelling of 166836863 in words is "one hundred sixty-six million, eight hundred thirty-six thousand, eight hundred sixty-three".