671601347 has 2 divisors, whose sum is σ = 671601348. Its totient is φ = 671601346.

The previous prime is 671601323. The next prime is 671601383. The reversal of 671601347 is 743106176.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 671601347 - 2²⁸ = 403165891 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (671601247) 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, 335800673 + 335800674.

It is an arithmetic number, because the mean of its divisors is an integer number (335800674).

Almost surely, 2^671601347 is an apocalyptic number.

671601347 is a deficient number, since it is larger than the sum of its proper divisors (1).

671601347 is an equidigital number, since it uses as much as digits as its factorization.

671601347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 671601347 is about 25915.2724662505. The cubic root of 671601347 is about 875.7305885132.

The spelling of 671601347 in words is "six hundred seventy-one million, six hundred one thousand, three hundred forty-seven".