166267223 has 2 divisors, whose sum is σ = 166267224. Its totient is φ = 166267222.

The previous prime is 166267139. The next prime is 166267249. The reversal of 166267223 is 322762661.

166267223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166267223 - 2¹⁸ = 166005079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166266223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83133611 + 83133612.

It is an arithmetic number, because the mean of its divisors is an integer number (83133612).

Almost surely, 2^166267223 is an apocalyptic number.

166267223 is a deficient number, since it is larger than the sum of its proper divisors (1).

166267223 is an equidigital number, since it uses as much as digits as its factorization.

166267223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 35.

The square root of 166267223 is about 12894.4648202242. The cubic root of 166267223 is about 549.8812118117.

The spelling of 166267223 in words is "one hundred sixty-six million, two hundred sixty-seven thousand, two hundred twenty-three".