2206664 has 16 divisors (see below), whose sum is σ = 4175820. Its totient is φ = 1093120.

The previous prime is 2206663. The next prime is 2206669. The reversal of 2206664 is 4666022.

It can be written as a sum of positive squares in 2 ways, for example, as 1582564 + 624100 = 1258^2 + 790^2 .

It is a plaindrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (2206663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317 + ... + 2124.

2^2206664 is an apocalyptic number.

It is an amenable number.

2206664 is a deficient number, since it is larger than the sum of its proper divisors (1969156).

2206664 is a wasteful number, since it uses less digits than its factorization.

2206664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2560 (or 2556 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 2206664 is about 1485.4844327693. The cubic root of 2206664 is about 130.1903326384.

The spelling of 2206664 in words is "two million, two hundred six thousand, six hundred sixty-four".