671006173 has 2 divisors, whose sum is σ = 671006174. Its totient is φ = 671006172.

The previous prime is 671006131. The next prime is 671006177. The reversal of 671006173 is 371600176.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 376437604 + 294568569 = 19402^2 + 17163^2 .

It is a cyclic number.

It is not a de Polignac number, because 671006173 - 2⁹ = 671005661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671006177) 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, 335503086 + 335503087.

It is an arithmetic number, because the mean of its divisors is an integer number (335503087).

Almost surely, 2^671006173 is an apocalyptic number.

It is an amenable number.

671006173 is a deficient number, since it is larger than the sum of its proper divisors (1).

671006173 is an equidigital number, since it uses as much as digits as its factorization.

671006173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 671006173 is about 25903.7868467141. The cubic root of 671006173 is about 875.4718208569.

The spelling of 671006173 in words is "six hundred seventy-one million, six thousand, one hundred seventy-three".