671066317 has 4 divisors (see below), whose sum is σ = 671151676. Its totient is φ = 670980960.

The previous prime is 671066281. The next prime is 671066323. The reversal of 671066317 is 713660176.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 337309956 + 333756361 = 18366^2 + 18269^2 .

It is a cyclic number.

It is not a de Polignac number, because 671066317 - 2¹¹ = 671064269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671066327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29538 + ... + 47059.

It is an arithmetic number, because the mean of its divisors is an integer number (167787919).

Almost surely, 2^671066317 is an apocalyptic number.

It is an amenable number.

671066317 is a deficient number, since it is larger than the sum of its proper divisors (85359).

671066317 is an equidigital number, since it uses as much as digits as its factorization.

671066317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85358.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 671066317 is about 25904.9477320453. The cubic root of 671066317 is about 875.4979770019.

The spelling of 671066317 in words is "six hundred seventy-one million, sixty-six thousand, three hundred seventeen".