671377307 has 2 divisors, whose sum is σ = 671377308. Its totient is φ = 671377306.

The previous prime is 671377279. The next prime is 671377309. The reversal of 671377307 is 703773176.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 671377307 - 2¹⁰ = 671376283 is a prime.

Together with 671377309, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (671377309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335688653 + 335688654.

It is an arithmetic number, because the mean of its divisors is an integer number (335688654).

Almost surely, 2^671377307 is an apocalyptic number.

671377307 is a deficient number, since it is larger than the sum of its proper divisors (1).

671377307 is an equidigital number, since it uses as much as digits as its factorization.

671377307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129654, while the sum is 41.

The square root of 671377307 is about 25910.9495580536. The cubic root of 671377307 is about 875.6331991404.

The spelling of 671377307 in words is "six hundred seventy-one million, three hundred seventy-seven thousand, three hundred seven".