2641585 has 4 divisors (see below), whose sum is σ = 3169908. Its totient is φ = 2113264.

The previous prime is 2641577. The next prime is 2641631. The reversal of 2641585 is 5851462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5851462 = 2 ⋅2925731.

It can be written as a sum of positive squares in 2 ways, for example, as 703921 + 1937664 = 839^2 + 1392^2 .

It is a cyclic number.

It is not a de Polignac number, because 2641585 - 2³ = 2641577 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

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, 264154 + ... + 264163.

It is an arithmetic number, because the mean of its divisors is an integer number (792477).

2^2641585 is an apocalyptic number.

It is an amenable number.

2641585 is a deficient number, since it is larger than the sum of its proper divisors (528323).

2641585 is an equidigital number, since it uses as much as digits as its factorization.

2641585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528322.

The product of its digits is 9600, while the sum is 31.

The square root of 2641585 is about 1625.2953577735. The cubic root of 2641585 is about 138.2361182102.

It can be divided in two parts, 264 and 1585, that added together give a square (1849 = 43²).

The spelling of 2641585 in words is "two million, six hundred forty-one thousand, five hundred eighty-five".