5720640581 has 4 divisors (see below), whose sum is σ = 5722068000. Its totient is φ = 5719213164.

The previous prime is 5720640571. The next prime is 5720640599. The reversal of 5720640581 is 1850460275.

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 5720640581 - 2¹⁸ = 5720378437 is a prime.

It is a super-2 number, since 2×5720640581² = 65451457313968035122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5720640551) 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, 707681 + ... + 715718.

It is an arithmetic number, because the mean of its divisors is an integer number (1430517000).

Almost surely, 2^5720640581 is an apocalyptic number.

It is an amenable number.

5720640581 is a deficient number, since it is larger than the sum of its proper divisors (1427419).

5720640581 is a wasteful number, since it uses less digits than its factorization.

5720640581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427418.

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 5720640581 is about 75634.9164143122. The cubic root of 5720640581 is about 1788.4695657454.

The spelling of 5720640581 in words is "five billion, seven hundred twenty million, six hundred forty thousand, five hundred eighty-one".