2223866 has 4 divisors (see below), whose sum is σ = 3335802. Its totient is φ = 1111932.

The previous prime is 2223857. The next prime is 2223869. The reversal of 2223866 is 6683222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2163841 + 60025 = 1471^2 + 245^2 .

It is not an unprimeable number, because it can be changed into a prime (2223869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555965 + ... + 555968.

2^2223866 is an apocalyptic number.

2223866 is a deficient number, since it is larger than the sum of its proper divisors (1111936).

2223866 is a wasteful number, since it uses less digits than its factorization.

2223866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111935.

The product of its digits is 6912, while the sum is 29.

The square root of 2223866 is about 1491.2632229087. The cubic root of 2223866 is about 130.5277559709.

The spelling of 2223866 in words is "two million, two hundred twenty-three thousand, eight hundred sixty-six".