2656393 has 4 divisors (see below), whose sum is σ = 2712960. Its totient is φ = 2599828.

The previous prime is 2656391. The next prime is 2656399. The reversal of 2656393 is 3936562.

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.

It is a cyclic number.

It is not a de Polignac number, because 2656393 - 2¹ = 2656391 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (2656391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28213 + ... + 28306.

It is an arithmetic number, because the mean of its divisors is an integer number (678240).

2^2656393 is an apocalyptic number.

It is an amenable number.

2656393 is a deficient number, since it is larger than the sum of its proper divisors (56567).

2656393 is an equidigital number, since it uses as much as digits as its factorization.

2656393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56566.

The product of its digits is 29160, while the sum is 34.

The square root of 2656393 is about 1629.8444711076. The cubic root of 2656393 is about 138.4939416170.

The spelling of 2656393 in words is "two million, six hundred fifty-six thousand, three hundred ninety-three".