166223327 has 4 divisors (see below), whose sum is σ = 166565136. Its totient is φ = 165881520.

The previous prime is 166223311. The next prime is 166223363. The reversal of 166223327 is 723322661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 723322661 = 4889 ⋅147949.

It is a cyclic number.

It is not a de Polignac number, because 166223327 - 2⁴ = 166223311 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 166223293 and 166223302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166223377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170174 + ... + 171147.

It is an arithmetic number, because the mean of its divisors is an integer number (41641284).

Almost surely, 2^166223327 is an apocalyptic number.

166223327 is a deficient number, since it is larger than the sum of its proper divisors (341809).

166223327 is an equidigital number, since it uses as much as digits as its factorization.

166223327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341808.

The product of its digits is 18144, while the sum is 32.

The square root of 166223327 is about 12892.7625821621. The cubic root of 166223327 is about 549.8328164040.

Adding to 166223327 its reverse (723322661), we get a palindrome (889545988).

The spelling of 166223327 in words is "one hundred sixty-six million, two hundred twenty-three thousand, three hundred twenty-seven".