2263668 has 36 divisors (see below), whose sum is σ = 5809440. Its totient is φ = 685520.

The previous prime is 2263643. The next prime is 2263687. The reversal of 2263668 is 8663622.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 673 + ... + 2231.

2^2263668 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 2263668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2904720).

2263668 is an abundant number, since it is smaller than the sum of its proper divisors (3545772).

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

2263668 is a wasteful number, since it uses less digits than its factorization.

2263668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588 (or 1575 counting only the distinct ones).

The product of its digits is 20736, while the sum is 33.

The square root of 2263668 is about 1504.5491018907. The cubic root of 2263668 is about 131.3018697479.

The spelling of 2263668 in words is "two million, two hundred sixty-three thousand, six hundred sixty-eight".