617666673193 has 2 divisors, whose sum is σ = 617666673194. Its totient is φ = 617666673192.

The previous prime is 617666673139. The next prime is 617666673293. The reversal of 617666673193 is 391376666716.

It is a happy number.

Together with previous prime (617666673139) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 611169023529 + 6497649664 = 781773^2 + 80608^2 .

It is a cyclic number.

It is not a de Polignac number, because 617666673193 - 2¹³ = 617666665001 is a prime.

It is not a weakly prime, because it can be changed into another prime (617666673293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 308833336596 + 308833336597.

It is an arithmetic number, because the mean of its divisors is an integer number (308833336597).

Almost surely, 2^617666673193 is an apocalyptic number.

It is an amenable number.

617666673193 is a deficient number, since it is larger than the sum of its proper divisors (1).

617666673193 is an equidigital number, since it uses as much as digits as its factorization.

617666673193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30862944, while the sum is 61.

The spelling of 617666673193 in words is "six hundred seventeen billion, six hundred sixty-six million, six hundred seventy-three thousand, one hundred ninety-three".