2243668 has 24 divisors (see below), whose sum is σ = 4519872. Its totient is φ = 954624.

The previous prime is 2243663. The next prime is 2243669. The reversal of 2243668 is 8663422.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6180 + ... + 6532.

It is an arithmetic number, because the mean of its divisors is an integer number (188328).

2^2243668 is an apocalyptic number.

2243668 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2243668 is an abundant number, since it is smaller than the sum of its proper divisors (2276204).

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

2243668 is a wasteful number, since it uses less digits than its factorization.

2243668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591 (or 589 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 2243668 is about 1497.8878462689. The cubic root of 2243668 is about 130.9140317416.

The spelling of 2243668 in words is "two million, two hundred forty-three thousand, six hundred sixty-eight".