166516227 has 6 divisors (see below), whose sum is σ = 240523452. Its totient is φ = 111010812.

The previous prime is 166516223. The next prime is 166516237. The reversal of 166516227 is 722615661.

It is a happy number.

166516227 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 166516227 - 2² = 166516223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166516191 and 166516200.

It is not an unprimeable number, because it can be changed into a prime (166516223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9250893 + ... + 9250910.

It is an arithmetic number, because the mean of its divisors is an integer number (40087242).

Almost surely, 2^166516227 is an apocalyptic number.

166516227 is a deficient number, since it is larger than the sum of its proper divisors (74007225).

166516227 is a wasteful number, since it uses less digits than its factorization.

166516227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18501809 (or 18501806 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 166516227 is about 12904.1166687224. The cubic root of 166516227 is about 550.1555780262.

The spelling of 166516227 in words is "one hundred sixty-six million, five hundred sixteen thousand, two hundred twenty-seven".