2656 has 12 divisors (see below), whose sum is σ = 5292. Its totient is φ = 1312.

The previous prime is 2647. The next prime is 2657. The reversal of 2656 is 6562.

2656 is nontrivially palindromic in base 3.

It is a nialpdrome in base 5 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10 + ... + 73.

It is an arithmetic number, because the mean of its divisors is an integer number (441).

It is an amenable number.

2656 is a deficient number, since it is larger than the sum of its proper divisors (2636).

2656 is an equidigital number, since it uses as much as digits as its factorization.

2656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93 (or 85 counting only the distinct ones).

The product of its digits is 360, while the sum is 19.

The square root of 2656 is about 51.5363949069. The cubic root of 2656 is about 13.8487111453.

The spelling of 2656 in words is "two thousand, six hundred fifty-six".