5711720605 has 8 divisors (see below), whose sum is σ = 7257245112. Its totient is φ = 4300589568.

The previous prime is 5711720603. The next prime is 5711720627. The reversal of 5711720605 is 5060271175.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3007096569 + 2704624036 = 54837^2 + 52006^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5711720605 - 2¹ = 5711720603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5711720603) 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 7 ways as a sum of consecutive naturals, for example, 33598272 + ... + 33598441.

It is an arithmetic number, because the mean of its divisors is an integer number (907155639).

Almost surely, 2^5711720605 is an apocalyptic number.

It is an amenable number.

5711720605 is a deficient number, since it is larger than the sum of its proper divisors (1545524507).

5711720605 is a wasteful number, since it uses less digits than its factorization.

5711720605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67196735.

The product of its (nonzero) digits is 14700, while the sum is 34.

The square root of 5711720605 is about 75575.9260942266. The cubic root of 5711720605 is about 1787.5395181248.

The spelling of 5711720605 in words is "five billion, seven hundred eleven million, seven hundred twenty thousand, six hundred five".