2580979 has 4 divisors (see below), whose sum is σ = 2716840. Its totient is φ = 2445120.

The previous prime is 2580973. The next prime is 2580997. The reversal of 2580979 is 9790852.

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

It is a cyclic number.

It is not a de Polignac number, because 2580979 - 2⁹ = 2580467 is a prime.

It is a super-2 number, since 2×2580979² = 13322905196882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2580973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67902 + ... + 67939.

It is an arithmetic number, because the mean of its divisors is an integer number (679210).

2^2580979 is an apocalyptic number.

2580979 is a deficient number, since it is larger than the sum of its proper divisors (135861).

2580979 is a wasteful number, since it uses less digits than its factorization.

2580979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135860.

The product of its (nonzero) digits is 45360, while the sum is 40.

The square root of 2580979 is about 1606.5425609053. The cubic root of 2580979 is about 137.1707427691.

The spelling of 2580979 in words is "two million, five hundred eighty thousand, nine hundred seventy-nine".