5020665689 has 8 divisors (see below), whose sum is σ = 5438866440. Its totient is φ = 4634458608.

The previous prime is 5020665649. The next prime is 5020665691. The reversal of 5020665689 is 9865660205.

It can be written as a sum of positive squares in 4 ways, for example, as 246961225 + 4773704464 = 15715^2 + 69092^2 .

It is not a de Polignac number, because 5020665689 - 2¹⁶ = 5020600153 is a prime.

It is a super-3 number, since 3×5020665689³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5020665649) 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, 1140422 + ... + 1144815.

It is an arithmetic number, because the mean of its divisors is an integer number (679858305).

Almost surely, 2^5020665689 is an apocalyptic number.

It is an amenable number.

5020665689 is a deficient number, since it is larger than the sum of its proper divisors (418200751).

5020665689 is an equidigital number, since it uses as much as digits as its factorization.

5020665689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2285276 (or 2285250 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 47.

The square root of 5020665689 is about 70856.6559258903. The cubic root of 5020665689 is about 1712.3285638247.

The spelling of 5020665689 in words is "five billion, twenty million, six hundred sixty-five thousand, six hundred eighty-nine".