2580965 has 4 divisors (see below), whose sum is σ = 3097164. Its totient is φ = 2064768.

The previous prime is 2580959. The next prime is 2580973. The reversal of 2580965 is 5690852.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1366561 + 1214404 = 1169^2 + 1102^2 .

It is a cyclic number.

It is not a de Polignac number, because 2580965 - 2⁶ = 2580901 is a prime.

It is a super-2 number, since 2×2580965² = 13322760662450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent 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, 258092 + ... + 258101.

It is an arithmetic number, because the mean of its divisors is an integer number (774291).

2^2580965 is an apocalyptic number.

It is an amenable number.

2580965 is a deficient number, since it is larger than the sum of its proper divisors (516199).

2580965 is an equidigital number, since it uses as much as digits as its factorization.

2580965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516198.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 2580965 is about 1606.5382037163. The cubic root of 2580965 is about 137.1704947503.

The spelling of 2580965 in words is "two million, five hundred eighty thousand, nine hundred sixty-five".