2113656 has 16 divisors (see below), whose sum is σ = 5284200. Its totient is φ = 704544.

The previous prime is 2113651. The next prime is 2113667. The reversal of 2113656 is 6563112.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 88069 = 2113656 / (2 + 1 + 1 + 3 + 6 + 5 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44011 + ... + 44058.

2^2113656 is an apocalyptic number.

It is an amenable number.

2113656 is an abundant number, since it is smaller than the sum of its proper divisors (3170544).

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

2113656 is a wasteful number, since it uses less digits than its factorization.

2113656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88078 (or 88074 counting only the distinct ones).

The product of its digits is 1080, while the sum is 24.

The square root of 2113656 is about 1453.8418070753. The cubic root of 2113656 is about 128.3348977527.

Adding to 2113656 its reverse (6563112), we get a palindrome (8676768).

The spelling of 2113656 in words is "two million, one hundred thirteen thousand, six hundred fifty-six".