2585406 has 16 divisors (see below), whose sum is σ = 5443200. Its totient is φ = 816408.

The previous prime is 2585399. The next prime is 2585413. The reversal of 2585406 is 6045852.

It is an interprime number because it is at equal distance from previous prime (2585399) and next prime (2585413).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11226 + ... + 11453.

It is an arithmetic number, because the mean of its divisors is an integer number (340200).

2^2585406 is an apocalyptic number.

2585406 is an abundant number, since it is smaller than the sum of its proper divisors (2857794).

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

2585406 is a wasteful number, since it uses less digits than its factorization.

2585406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22703.

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 2585406 is about 1607.9197741181. The cubic root of 2585406 is about 137.2491249144.

The spelling of 2585406 in words is "two million, five hundred eighty-five thousand, four hundred six".