2560657 has 8 divisors (see below), whose sum is σ = 2816352. Its totient is φ = 2308800.

The previous prime is 2560651. The next prime is 2560661. The reversal of 2560657 is 7560652.

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

It is a cyclic number.

It is not a de Polignac number, because 2560657 - 2¹¹ = 2558609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2560651) 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, 553 + ... + 2329.

It is an arithmetic number, because the mean of its divisors is an integer number (352044).

2^2560657 is an apocalyptic number.

It is an amenable number.

2560657 is a deficient number, since it is larger than the sum of its proper divisors (255695).

2560657 is a wasteful number, since it uses less digits than its factorization.

2560657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 2560657 is about 1600.2052993288. The cubic root of 2560657 is about 136.8097773810.

The spelling of 2560657 in words is "two million, five hundred sixty thousand, six hundred fifty-seven".