2243637 has 24 divisors (see below), whose sum is σ = 3583008. Its totient is φ = 1341600.

The previous prime is 2243623. The next prime is 2243663. The reversal of 2243637 is 7363422.

2243637 is a `hidden beast` number, since 2 + 24 + 3 + 637 = 666.

It is not a de Polignac number, because 2243637 - 2⁴ = 2243621 is a prime.

It is a d-powerful number, because it can be written as 2¹⁷ + 2²¹ + 4⁵ + 3 + 6⁵ + 3⁸ + 7² .

It is a self number, because there is not a number n which added to its sum of digits gives 2243637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2243617) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12883 + ... + 13055.

It is an arithmetic number, because the mean of its divisors is an integer number (149292).

2^2243637 is an apocalyptic number.

It is an amenable number.

2243637 is a deficient number, since it is larger than the sum of its proper divisors (1339371).

2243637 is a wasteful number, since it uses less digits than its factorization.

2243637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 318 counting only the distinct ones).

The product of its digits is 6048, while the sum is 27.

The square root of 2243637 is about 1497.8774983289. The cubic root of 2243637 is about 130.9134288072.

The spelling of 2243637 in words is "two million, two hundred forty-three thousand, six hundred thirty-seven".