2268639 has 12 divisors (see below), whose sum is σ = 3317496. Its totient is φ = 1493712.

The previous prime is 2268631. The next prime is 2268647. The reversal of 2268639 is 9368622.

It is an interprime number because it is at equal distance from previous prime (2268631) and next prime (2268647).

It is not a de Polignac number, because 2268639 - 2³ = 2268631 is a prime.

2268639 is a lucky number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2268631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 772 + ... + 2265.

It is an arithmetic number, because the mean of its divisors is an integer number (276458).

2^2268639 is an apocalyptic number.

2268639 is a deficient number, since it is larger than the sum of its proper divisors (1048857).

2268639 is a wasteful number, since it uses less digits than its factorization.

2268639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3126 (or 3123 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 2268639 is about 1506.2001858983. The cubic root of 2268639 is about 131.3979121594.

The spelling of 2268639 in words is "two million, two hundred sixty-eight thousand, six hundred thirty-nine".