2204866 has 8 divisors (see below), whose sum is σ = 3501900. Its totient is φ = 1037568.

The previous prime is 2204863. The next prime is 2204887. The reversal of 2204866 is 6684022.

It can be written as a sum of positive squares in 2 ways, for example, as 2175625 + 29241 = 1475^2 + 171^2 .

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

It is a super-2 number, since 2×2204866² = 9722868155912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2204863) 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, 32391 + ... + 32458.

2^2204866 is an apocalyptic number.

2204866 is a deficient number, since it is larger than the sum of its proper divisors (1297034).

2204866 is a wasteful number, since it uses less digits than its factorization.

2204866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64868.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 2204866 is about 1484.8791196592. The cubic root of 2204866 is about 130.1549631358.

Adding to 2204866 its reverse (6684022), we get a palindrome (8888888).

The spelling of 2204866 in words is "two million, two hundred four thousand, eight hundred sixty-six".