671082563 has 2 divisors, whose sum is σ = 671082564. Its totient is φ = 671082562.

The previous prime is 671082539. The next prime is 671082571. The reversal of 671082563 is 365280176.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 671082563 - 2¹⁸ = 670820419 is a prime.

It is a super-3 number, since 3×671082563³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (671082163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335541281 + 335541282.

It is an arithmetic number, because the mean of its divisors is an integer number (335541282).

Almost surely, 2^671082563 is an apocalyptic number.

671082563 is a deficient number, since it is larger than the sum of its proper divisors (1).

671082563 is an equidigital number, since it uses as much as digits as its factorization.

671082563 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 671082563 is about 25905.2612995893. The cubic root of 671082563 is about 875.5050419893.

The spelling of 671082563 in words is "six hundred seventy-one million, eighty-two thousand, five hundred sixty-three".