2580665 has 8 divisors (see below), whose sum is σ = 3127488. Its totient is φ = 2044080.

The previous prime is 2580661. The next prime is 2580667. The reversal of 2580665 is 5660852.

It is a happy number.

2580665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2580665 - 2² = 2580661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2580661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1991 + ... + 3020.

It is an arithmetic number, because the mean of its divisors is an integer number (390936).

2^2580665 is an apocalyptic number.

It is an amenable number.

2580665 is a deficient number, since it is larger than the sum of its proper divisors (546823).

2580665 is a wasteful number, since it uses less digits than its factorization.

2580665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5119.

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

The square root of 2580665 is about 1606.4448325417. Note that the first 3 decimals coincide. The cubic root of 2580665 is about 137.1651798464.

The spelling of 2580665 in words is "two million, five hundred eighty thousand, six hundred sixty-five".