1666227 has 8 divisors (see below), whose sum is σ = 2233600. Its totient is φ = 1104840.

The previous prime is 1666213. The next prime is 1666237. The reversal of 1666227 is 7226661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1666227 - 2⁴ = 1666211 is a prime.

It is a Duffinian number.

1666227 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1666194 and 1666203.

It is not an unprimeable number, because it can be changed into a prime (1666237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 799 + ... + 1992.

It is an arithmetic number, because the mean of its divisors is an integer number (279200).

2^1666227 is an apocalyptic number.

1666227 is a deficient number, since it is larger than the sum of its proper divisors (567373).

1666227 is a wasteful number, since it uses less digits than its factorization.

1666227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2993.

The product of its digits is 6048, while the sum is 30.

The square root of 1666227 is about 1290.8241553364. The cubic root of 1666227 is about 118.5526835833.

The spelling of 1666227 in words is "one million, six hundred sixty-six thousand, two hundred twenty-seven".