671670585317 has 2 divisors, whose sum is σ = 671670585318. Its totient is φ = 671670585316.

The previous prime is 671670585247. The next prime is 671670585403. The reversal of 671670585317 is 713585076176.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 481477780996 + 190192804321 = 693886^2 + 436111^2 .

It is a cyclic number.

It is not a de Polignac number, because 671670585317 - 2¹² = 671670581221 is a prime.

It is a super-2 number, since 2×671670585317² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671670585217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335835292658 + 335835292659.

It is an arithmetic number, because the mean of its divisors is an integer number (335835292659).

Almost surely, 2^671670585317 is an apocalyptic number.

It is an amenable number.

671670585317 is a deficient number, since it is larger than the sum of its proper divisors (1).

671670585317 is an equidigital number, since it uses as much as digits as its factorization.

671670585317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7408800, while the sum is 56.

The spelling of 671670585317 in words is "six hundred seventy-one billion, six hundred seventy million, five hundred eighty-five thousand, three hundred seventeen".