627894393197 has 2 divisors, whose sum is σ = 627894393198. Its totient is φ = 627894393196.

The previous prime is 627894393173. The next prime is 627894393199. The reversal of 627894393197 is 791393498726.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 438887700196 + 189006693001 = 662486^2 + 434749^2 .

It is a cyclic number.

It is not a de Polignac number, because 627894393197 - 2¹⁰ = 627894392173 is a prime.

Together with 627894393199, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (627894393199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313947196598 + 313947196599.

It is an arithmetic number, because the mean of its divisors is an integer number (313947196599).

Almost surely, 2^627894393197 is an apocalyptic number.

It is an amenable number.

627894393197 is a deficient number, since it is larger than the sum of its proper divisors (1).

627894393197 is an equidigital number, since it uses as much as digits as its factorization.

627894393197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 123451776, while the sum is 68.

The spelling of 627894393197 in words is "six hundred twenty-seven billion, eight hundred ninety-four million, three hundred ninety-three thousand, one hundred ninety-seven".