2656317 has 8 divisors (see below), whose sum is σ = 3550624. Its totient is φ = 1766448.

The previous prime is 2656309. The next prime is 2656319. The reversal of 2656317 is 7136562.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2656317 - 2³ = 2656309 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 (2656319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 723 + ... + 2415.

It is an arithmetic number, because the mean of its divisors is an integer number (443828).

2^2656317 is an apocalyptic number.

It is an amenable number.

2656317 is a deficient number, since it is larger than the sum of its proper divisors (894307).

2656317 is a wasteful number, since it uses less digits than its factorization.

2656317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2219.

The product of its digits is 7560, while the sum is 30.

The square root of 2656317 is about 1629.8211558327. The cubic root of 2656317 is about 138.4926208235.

The spelling of 2656317 in words is "two million, six hundred fifty-six thousand, three hundred seventeen".