671745583 has 2 divisors, whose sum is σ = 671745584. Its totient is φ = 671745582.

The previous prime is 671745553. The next prime is 671745631. The reversal of 671745583 is 385547176.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 671745583 - 2⁹ = 671745071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671745533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335872791 + 335872792.

It is an arithmetic number, because the mean of its divisors is an integer number (335872792).

Almost surely, 2^671745583 is an apocalyptic number.

671745583 is a deficient number, since it is larger than the sum of its proper divisors (1).

671745583 is an equidigital number, since it uses as much as digits as its factorization.

671745583 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 705600, while the sum is 46.

The square root of 671745583 is about 25918.0551546600. The cubic root of 671745583 is about 875.7932759176.

The spelling of 671745583 in words is "six hundred seventy-one million, seven hundred forty-five thousand, five hundred eighty-three".