2585660 has 96 divisors (see below), whose sum is σ = 7160832. Its totient is φ = 760320.

The previous prime is 2585659. The next prime is 2585707. The reversal of 2585660 is 665852.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35384 + ... + 35456.

It is an arithmetic number, because the mean of its divisors is an integer number (74592).

2^2585660 is an apocalyptic number.

2585660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2585660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3580416).

2585660 is an abundant number, since it is smaller than the sum of its proper divisors (4575172).

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

2585660 is a wasteful number, since it uses less digits than its factorization.

2585660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 2585660 is about 1607.9987562184. The cubic root of 2585660 is about 137.2536193904.

The spelling of 2585660 in words is "two million, five hundred eighty-five thousand, six hundred sixty".