2604568761 has 6 divisors (see below), whose sum is σ = 3762154890. Its totient is φ = 1736379168.

The previous prime is 2604568751. The next prime is 2604568763. The reversal of 2604568761 is 1678654062.

2604568761 is a `hidden beast` number, since 2 + 60 + 456 + 87 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2596412025 + 8156736 = 50955^2 + 2856^2 .

It is not a de Polignac number, because 2604568761 - 2¹⁵ = 2604535993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2604568763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 144698256 + ... + 144698273.

It is an arithmetic number, because the mean of its divisors is an integer number (627025815).

Almost surely, 2^2604568761 is an apocalyptic number.

It is an amenable number.

2604568761 is a deficient number, since it is larger than the sum of its proper divisors (1157586129).

2604568761 is a wasteful number, since it uses less digits than its factorization.

2604568761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289396535 (or 289396532 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 2604568761 is about 51034.9758596984. The cubic root of 2604568761 is about 1375.8738266612.

The spelling of 2604568761 in words is "two billion, six hundred four million, five hundred sixty-eight thousand, seven hundred sixty-one".