627716425789 has 2 divisors, whose sum is σ = 627716425790. Its totient is φ = 627716425788.

The previous prime is 627716425747. The next prime is 627716425801. The reversal of 627716425789 is 987524617726.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 623692426564 + 4023999225 = 789742^2 + 63435^2 .

It is a cyclic number.

It is not a de Polignac number, because 627716425789 - 2³⁷ = 490277472317 is a prime.

It is a super-2 number, since 2×627716425789² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 627716425789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (627716425289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313858212894 + 313858212895.

It is an arithmetic number, because the mean of its divisors is an integer number (313858212895).

Almost surely, 2^627716425789 is an apocalyptic number.

It is an amenable number.

627716425789 is a deficient number, since it is larger than the sum of its proper divisors (1).

627716425789 is an equidigital number, since it uses as much as digits as its factorization.

627716425789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 71124480, while the sum is 64.

The spelling of 627716425789 in words is "six hundred twenty-seven billion, seven hundred sixteen million, four hundred twenty-five thousand, seven hundred eighty-nine".