671315959 has 2 divisors, whose sum is σ = 671315960. Its totient is φ = 671315958.

The previous prime is 671315917. The next prime is 671315963. The reversal of 671315959 is 959513176.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671315959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671315969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335657979 + 335657980.

It is an arithmetic number, because the mean of its divisors is an integer number (335657980).

Almost surely, 2^671315959 is an apocalyptic number.

671315959 is a deficient number, since it is larger than the sum of its proper divisors (1).

671315959 is an equidigital number, since it uses as much as digits as its factorization.

671315959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 255150, while the sum is 46.

The square root of 671315959 is about 25909.7657071615. The cubic root of 671315959 is about 875.6065276095.

The spelling of 671315959 in words is "six hundred seventy-one million, three hundred fifteen thousand, nine hundred fifty-nine".