2631560 has 16 divisors (see below), whose sum is σ = 5921100. Its totient is φ = 1052608.

The previous prime is 2631553. The next prime is 2631581. The reversal of 2631560 is 651362.

It can be written as a sum of positive squares in 2 ways, for example, as 2630884 + 676 = 1622^2 + 26^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32855 + ... + 32934.

2^2631560 is an apocalyptic number.

2631560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2631560 is an abundant number, since it is smaller than the sum of its proper divisors (3289540).

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

2631560 is a wasteful number, since it uses less digits than its factorization.

2631560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65800 (or 65796 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 2631560 is about 1622.2083713260. The cubic root of 2631560 is about 138.0610246103.

The spelling of 2631560 in words is "two million, six hundred thirty-one thousand, five hundred sixty".