2661844804 has 24 divisors (see below), whose sum is σ = 4779476856. Its totient is φ = 1296384000.

The previous prime is 2661844793. The next prime is 2661844807. The reversal of 2661844804 is 4084481662.

It can be written as a sum of positive squares in 4 ways, for example, as 632522500 + 2029322304 = 25150^2 + 45048^2 .

It is not an unprimeable number, because it can be changed into a prime (2661844807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92464 + ... + 117784.

It is an arithmetic number, because the mean of its divisors is an integer number (199144869).

Almost surely, 2^2661844804 is an apocalyptic number.

It is an amenable number.

2661844804 is a deficient number, since it is larger than the sum of its proper divisors (2117632052).

2661844804 is a wasteful number, since it uses less digits than its factorization.

2661844804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26007 (or 26005 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 43.

The square root of 2661844804 is about 51593.0693407554. The cubic root of 2661844804 is about 1385.8862212057.

The spelling of 2661844804 in words is "two billion, six hundred sixty-one million, eight hundred forty-four thousand, eight hundred four".