2604360639 has 4 divisors (see below), whose sum is σ = 3472480856. Its totient is φ = 1736240424.

The previous prime is 2604360593. The next prime is 2604360641. The reversal of 2604360639 is 9360634062.

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

It is not a de Polignac number, because 2604360639 - 2⁸ = 2604360383 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2604360597 and 2604360606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2604360739) 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, 434060104 + ... + 434060109.

It is an arithmetic number, because the mean of its divisors is an integer number (868120214).

Almost surely, 2^2604360639 is an apocalyptic number.

2604360639 is a deficient number, since it is larger than the sum of its proper divisors (868120217).

2604360639 is an equidigital number, since it uses as much as digits as its factorization.

2604360639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868120216.

The product of its (nonzero) digits is 139968, while the sum is 39.

The square root of 2604360639 is about 51032.9368055573. The cubic root of 2604360639 is about 1375.8371785931.

The spelling of 2604360639 in words is "two billion, six hundred four million, three hundred sixty thousand, six hundred thirty-nine".