2656560 has 40 divisors (see below), whose sum is σ = 8236080. Its totient is φ = 708352.

The previous prime is 2656553. The next prime is 2656601. The reversal of 2656560 is 656562.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×2656560² = 14114622067200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5295 + ... + 5774.

It is an arithmetic number, because the mean of its divisors is an integer number (205902).

2^2656560 is an apocalyptic number.

2656560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2656560 is an abundant number, since it is smaller than the sum of its proper divisors (5579520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2656560 is a wasteful number, since it uses less digits than its factorization.

2656560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11085 (or 11079 counting only the distinct ones).

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

The square root of 2656560 is about 1629.8957021847. The cubic root of 2656560 is about 138.4968437985.

The spelling of 2656560 in words is "two million, six hundred fifty-six thousand, five hundred sixty".