2656213 has 4 divisors (see below), whose sum is σ = 3035680. Its totient is φ = 2276748.

The previous prime is 2656211. The next prime is 2656229. The reversal of 2656213 is 3126562.

2656213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3126562 = 2 ⋅1563281.

It is a cyclic number.

It is not a de Polignac number, because 2656213 - 2¹ = 2656211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189723 + ... + 189736.

It is an arithmetic number, because the mean of its divisors is an integer number (758920).

2^2656213 is an apocalyptic number.

It is an amenable number.

2656213 is a deficient number, since it is larger than the sum of its proper divisors (379467).

2656213 is an equidigital number, since it uses as much as digits as its factorization.

2656213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379466.

The product of its digits is 2160, while the sum is 25.

The square root of 2656213 is about 1629.7892501793. The cubic root of 2656213 is about 138.4908133810.

The spelling of 2656213 in words is "two million, six hundred fifty-six thousand, two hundred thirteen".