2304040661 has 4 divisors (see below), whose sum is σ = 2481274572. Its totient is φ = 2126806752.

The previous prime is 2304040657. The next prime is 2304040763. The reversal of 2304040661 is 1660404032.

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

It can be written as a sum of positive squares in 2 ways, for example, as 423083761 + 1880956900 = 20569^2 + 43370^2 .

It is a cyclic number.

It is not a de Polignac number, because 2304040661 - 2² = 2304040657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2304040661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2304040601) 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 3 ways as a sum of consecutive naturals, for example, 88616936 + ... + 88616961.

It is an arithmetic number, because the mean of its divisors is an integer number (620318643).

Almost surely, 2^2304040661 is an apocalyptic number.

It is an amenable number.

2304040661 is a deficient number, since it is larger than the sum of its proper divisors (177233911).

2304040661 is a wasteful number, since it uses less digits than its factorization.

2304040661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177233910.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 2304040661 is about 48000.4235502146. The cubic root of 2304040661 is about 1320.7786691686.

Adding to 2304040661 its reverse (1660404032), we get a palindrome (3964444693).

The spelling of 2304040661 in words is "two billion, three hundred four million, forty thousand, six hundred sixty-one".