2113568 has 18 divisors (see below), whose sum is σ = 4177341. Its totient is φ = 1052672.

The previous prime is 2113567. The next prime is 2113583. The reversal of 2113568 is 8653112.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 1317904 + 795664 = 1148^2 + 892^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=1028.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2113567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (3) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 8096 + ... + 8352.

2^2113568 is an apocalyptic number.

It is an amenable number.

2113568 is a deficient number, since it is larger than the sum of its proper divisors (2063773).

2113568 is an frugal number, since it uses more digits than its factorization.

2113568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524 (or 259 counting only the distinct ones).

The product of its digits is 1440, while the sum is 26.

The square root of 2113568 is about 1453.8115421195. The cubic root of 2113568 is about 128.3331166953. Note that the first 3 decimals are identical.

The spelling of 2113568 in words is "two million, one hundred thirteen thousand, five hundred sixty-eight".