166226467 has 4 divisors (see below), whose sum is σ = 181337976. Its totient is φ = 151114960.

The previous prime is 166226453. The next prime is 166226471. The reversal of 166226467 is 764622661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 764622661 = 11 ⋅69511151.

It is a cyclic number.

It is not a de Polignac number, because 166226467 - 2⁷ = 166226339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166226477) 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 in 3 ways as a sum of consecutive naturals, for example, 7555738 + ... + 7555759.

It is an arithmetic number, because the mean of its divisors is an integer number (45334494).

Almost surely, 2^166226467 is an apocalyptic number.

166226467 is a deficient number, since it is larger than the sum of its proper divisors (15111509).

166226467 is a wasteful number, since it uses less digits than its factorization.

166226467 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15111508.

The product of its digits is 145152, while the sum is 40.

The square root of 166226467 is about 12892.8843553334. The cubic root of 166226467 is about 549.8362785417.

The spelling of 166226467 in words is "one hundred sixty-six million, two hundred twenty-six thousand, four hundred sixty-seven".