866671227 has 24 divisors (see below), whose sum is σ = 1275157728. Its totient is φ = 567100800.

The previous prime is 866671219. The next prime is 866671261. The reversal of 866671227 is 722176668.

It is not a de Polignac number, because 866671227 - 2³ = 866671219 is a prime.

It is a super-2 number, since 2×866671227² = 1502238031419371058, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (866671297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 145977 + ... + 151797.

It is an arithmetic number, because the mean of its divisors is an integer number (53131572).

Almost surely, 2^866671227 is an apocalyptic number.

866671227 is a deficient number, since it is larger than the sum of its proper divisors (408486501).

866671227 is a wasteful number, since it uses less digits than its factorization.

866671227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6131 (or 6128 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 866671227 is about 29439.2803410681. The cubic root of 866671227 is about 953.4211742648.

The spelling of 866671227 in words is "eight hundred sixty-six million, six hundred seventy-one thousand, two hundred twenty-seven".