720672027169 has 2 divisors, whose sum is σ = 720672027170. Its totient is φ = 720672027168.

The previous prime is 720672027143. The next prime is 720672027181. The reversal of 720672027169 is 961720276027.

It is a happy number.

720672027169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 540352897569 + 180319129600 = 735087^2 + 424640^2 .

It is a cyclic number.

It is not a de Polignac number, because 720672027169 - 2³³ = 712082092577 is a prime.

It is a super-2 number, since 2×720672027169² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (720672027199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360336013584 + 360336013585.

It is an arithmetic number, because the mean of its divisors is an integer number (360336013585).

Almost surely, 2^720672027169 is an apocalyptic number.

It is an amenable number.

720672027169 is a deficient number, since it is larger than the sum of its proper divisors (1).

720672027169 is an equidigital number, since it uses as much as digits as its factorization.

720672027169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 889056, while the sum is 49.

The spelling of 720672027169 in words is "seven hundred twenty billion, six hundred seventy-two million, twenty-seven thousand, one hundred sixty-nine".