5283720661 has 2 divisors, whose sum is σ = 5283720662. Its totient is φ = 5283720660.

The previous prime is 5283720647. The next prime is 5283720667. The reversal of 5283720661 is 1660273825.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3383632561 + 1900088100 = 58169^2 + 43590^2 .

It is a cyclic number.

It is not a de Polignac number, because 5283720661 - 2¹¹ = 5283718613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5283720667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2641860330 + 2641860331.

It is an arithmetic number, because the mean of its divisors is an integer number (2641860331).

Almost surely, 2^5283720661 is an apocalyptic number.

It is an amenable number.

5283720661 is a deficient number, since it is larger than the sum of its proper divisors (1).

5283720661 is an equidigital number, since it uses as much as digits as its factorization.

5283720661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 5283720661 is about 72689.2059455873. The cubic root of 5283720661 is about 1741.7264606482.

The spelling of 5283720661 in words is "five billion, two hundred eighty-three million, seven hundred twenty thousand, six hundred sixty-one".