2656867 has 2 divisors, whose sum is σ = 2656868. Its totient is φ = 2656866.

The previous prime is 2656861. The next prime is 2656877. The reversal of 2656867 is 7686562.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2656867 - 2¹⁵ = 2624099 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2656861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1328433 + 1328434.

It is an arithmetic number, because the mean of its divisors is an integer number (1328434).

2^2656867 is an apocalyptic number.

2656867 is a deficient number, since it is larger than the sum of its proper divisors (1).

2656867 is an equidigital number, since it uses as much as digits as its factorization.

2656867 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 40.

The square root of 2656867 is about 1629.9898772692. The cubic root of 2656867 is about 138.5021786292.

The spelling of 2656867 in words is "two million, six hundred fifty-six thousand, eight hundred sixty-seven".