2266644 has 48 divisors (see below), whose sum is σ = 5757696. Its totient is φ = 691200.

The previous prime is 2266639. The next prime is 2266679. The reversal of 2266644 is 4466622.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8229 + ... + 8499.

It is an arithmetic number, because the mean of its divisors is an integer number (119952).

2^2266644 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2266644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2878848).

2266644 is an abundant number, since it is smaller than the sum of its proper divisors (3491052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2266644 is a wasteful number, since it uses less digits than its factorization.

2266644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 334 counting only the distinct ones).

The product of its digits is 13824, while the sum is 30.

The square root of 2266644 is about 1505.5377776728. The cubic root of 2266644 is about 131.3593845499.

It can be divided in two parts, 22 and 66644, that added together give a palindrome (66666).

The spelling of 2266644 in words is "two million, two hundred sixty-six thousand, six hundred forty-four".