2580663 has 8 divisors (see below), whose sum is σ = 3524976. Its totient is φ = 1678400.

The previous prime is 2580661. The next prime is 2580667. The reversal of 2580663 is 3660852.

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

It is a cyclic number.

It is not a de Polignac number, because 2580663 - 2¹ = 2580661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2580663.

It is a congruent number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10368 + ... + 10613.

It is an arithmetic number, because the mean of its divisors is an integer number (440622).

2^2580663 is an apocalyptic number.

2580663 is a deficient number, since it is larger than the sum of its proper divisors (944313).

2580663 is a wasteful number, since it uses less digits than its factorization.

2580663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21025.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 2580663 is about 1606.4442100490. Note that the first 3 decimals coincide. The cubic root of 2580663 is about 137.1651444123.

The spelling of 2580663 in words is "two million, five hundred eighty thousand, six hundred sixty-three".