2636560 has 20 divisors (see below), whose sum is σ = 6130188. Its totient is φ = 1054592.

The previous prime is 2636549. The next prime is 2636567. The reversal of 2636560 is 656362.

It can be written as a sum of positive squares in 2 ways, for example, as 1937664 + 698896 = 1392^2 + 836^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (2636567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16399 + ... + 16558.

2^2636560 is an apocalyptic number.

2636560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2636560 is an abundant number, since it is smaller than the sum of its proper divisors (3493628).

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

2636560 is a wasteful number, since it uses less digits than its factorization.

2636560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32970 (or 32964 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 2636560 is about 1623.7487490372. The cubic root of 2636560 is about 138.1484085686.

The spelling of 2636560 in words is "two million, six hundred thirty-six thousand, five hundred sixty".