2656605 has 16 divisors (see below), whose sum is σ = 4857984. Its totient is φ = 1214400.

The previous prime is 2656601. The next prime is 2656627. The reversal of 2656605 is 5066562.

It is not a de Polignac number, because 2656605 - 2² = 2656601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2656601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12546 + ... + 12755.

It is an arithmetic number, because the mean of its divisors is an integer number (303624).

2^2656605 is an apocalyptic number.

It is an amenable number.

2656605 is a deficient number, since it is larger than the sum of its proper divisors (2201379).

2656605 is a wasteful number, since it uses less digits than its factorization.

2656605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25316.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 2656605 is about 1629.9095066905. The cubic root of 2656605 is about 138.4976258026.

The spelling of 2656605 in words is "two million, six hundred fifty-six thousand, six hundred five".