2605963 has 4 divisors (see below), whose sum is σ = 2614168. Its totient is φ = 2597760.

The previous prime is 2605949. The next prime is 2605979. The reversal of 2605963 is 3695062.

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 2605963 - 2⁵ = 2605931 is a prime.

It is a Duffinian number.

2605963 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2605943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3606 + ... + 4267.

It is an arithmetic number, because the mean of its divisors is an integer number (653542).

2^2605963 is an apocalyptic number.

2605963 is a deficient number, since it is larger than the sum of its proper divisors (8205).

2605963 is an equidigital number, since it uses as much as digits as its factorization.

2605963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8204.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 2605963 is about 1614.2995384996. The cubic root of 2605963 is about 137.6119286970.

The spelling of 2605963 in words is "two million, six hundred five thousand, nine hundred sixty-three".