2271666 has 16 divisors (see below), whose sum is σ = 4565088. Its totient is φ = 753600.

The previous prime is 2271637. The next prime is 2271673. The reversal of 2271666 is 6661722.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 661 + ... + 2231.

It is an arithmetic number, because the mean of its divisors is an integer number (285318).

2^2271666 is an apocalyptic number.

2271666 is an abundant number, since it is smaller than the sum of its proper divisors (2293422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2271666 is a wasteful number, since it uses less digits than its factorization.

2271666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1817.

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

The square root of 2271666 is about 1507.2046974449. The cubic root of 2271666 is about 131.4563267289.

The spelling of 2271666 in words is "two million, two hundred seventy-one thousand, six hundred sixty-six".