627990164617 has 2 divisors, whose sum is σ = 627990164618. Its totient is φ = 627990164616.

The previous prime is 627990164609. The next prime is 627990164663. The reversal of 627990164617 is 716461099726.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 627859725376 + 130439241 = 792376^2 + 11421^2 .

It is a cyclic number.

It is not a de Polignac number, because 627990164617 - 2³ = 627990164609 is a prime.

It is not a weakly prime, because it can be changed into another prime (627990167617) 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 as a sum of consecutive naturals, namely, 313995082308 + 313995082309.

It is an arithmetic number, because the mean of its divisors is an integer number (313995082309).

Almost surely, 2^627990164617 is an apocalyptic number.

It is an amenable number.

627990164617 is a deficient number, since it is larger than the sum of its proper divisors (1).

627990164617 is an equidigital number, since it uses as much as digits as its factorization.

627990164617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6858432, while the sum is 58.

The spelling of 627990164617 in words is "six hundred twenty-seven billion, nine hundred ninety million, one hundred sixty-four thousand, six hundred seventeen".