2206556 has 36 divisors (see below), whose sum is σ = 4379424. Its totient is φ = 971520.

The previous prime is 2206543. The next prime is 2206559. The reversal of 2206556 is 6556022.

It is a happy number.

2206556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2206556² = 9737778762272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2206559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22700 + ... + 22796.

2^2206556 is an apocalyptic number.

It is an amenable number.

2206556 is a deficient number, since it is larger than the sum of its proper divisors (2172868).

2206556 is a wasteful number, since it uses less digits than its factorization.

2206556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 2206556 is about 1485.4480805467. The cubic root of 2206556 is about 130.1882086501.

It can be divided in two parts, 220 and 6556, that added together give a palindrome (6776).

The spelling of 2206556 in words is "two million, two hundred six thousand, five hundred fifty-six".