2604736321 has 4 divisors (see below), whose sum is σ = 2841530544. Its totient is φ = 2367942100.

The previous prime is 2604736313. The next prime is 2604736327. The reversal of 2604736321 is 1236374062.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2604736321 - 2³ = 2604736313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2604736327) 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, 118397095 + ... + 118397116.

It is an arithmetic number, because the mean of its divisors is an integer number (710382636).

Almost surely, 2^2604736321 is an apocalyptic number.

It is an amenable number.

2604736321 is a deficient number, since it is larger than the sum of its proper divisors (236794223).

2604736321 is a wasteful number, since it uses less digits than its factorization.

2604736321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236794222.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 2604736321 is about 51036.6174525703. The cubic root of 2604736321 is about 1375.9033307744.

The spelling of 2604736321 in words is "two billion, six hundred four million, seven hundred thirty-six thousand, three hundred twenty-one".