2205766 has 4 divisors (see below), whose sum is σ = 3308652. Its totient is φ = 1102882.

The previous prime is 2205761. The next prime is 2205779. The reversal of 2205766 is 6675022.

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

It is a d-powerful number, because it can be written as 2⁹ + 2¹⁹ + 0 + 5 + 7² + 6⁴ + 6⁸ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551440 + ... + 551443.

It is an arithmetic number, because the mean of its divisors is an integer number (827163).

2^2205766 is an apocalyptic number.

2205766 is a deficient number, since it is larger than the sum of its proper divisors (1102886).

2205766 is a wasteful number, since it uses less digits than its factorization.

2205766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1102885.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 2205766 is about 1485.1821437117. The cubic root of 2205766 is about 130.1726699612.

The spelling of 2205766 in words is "two million, two hundred five thousand, seven hundred sixty-six".