674164085173 has 2 divisors, whose sum is σ = 674164085174. Its totient is φ = 674164085172.

The previous prime is 674164085171. The next prime is 674164085183. The reversal of 674164085173 is 371580461476.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 613491528049 + 60672557124 = 783257^2 + 246318^2 .

It is a cyclic number.

It is not a de Polignac number, because 674164085173 - 2¹ = 674164085171 is a prime.

Together with 674164085171, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 674164085173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (674164085171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337082042586 + 337082042587.

It is an arithmetic number, because the mean of its divisors is an integer number (337082042587).

Almost surely, 2^674164085173 is an apocalyptic number.

It is an amenable number.

674164085173 is a deficient number, since it is larger than the sum of its proper divisors (1).

674164085173 is an equidigital number, since it uses as much as digits as its factorization.

674164085173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3386880, while the sum is 52.

The spelling of 674164085173 in words is "six hundred seventy-four billion, one hundred sixty-four million, eighty-five thousand, one hundred seventy-three".