671087 has 2 divisors, whose sum is σ = 671088. Its totient is φ = 671086.

The previous prime is 671081. The next prime is 671093. The reversal of 671087 is 780176.

It is a balanced prime because it is at equal distance from previous prime (671081) and next prime (671093).

It is a cyclic number.

It is not a de Polignac number, because 671087 - 2¹⁶ = 605551 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 671087.

It is not a weakly prime, because it can be changed into another prime (671081) 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, 335543 + 335544.

It is an arithmetic number, because the mean of its divisors is an integer number (335544).

2⁶⁷¹⁰⁸⁷ is an apocalyptic number.

671087 is a deficient number, since it is larger than the sum of its proper divisors (1).

671087 is an equidigital number, since it uses as much as digits as its factorization.

671087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 671087 is about 819.1989990228. The cubic root of 671087 is about 87.5506971512.

The spelling of 671087 in words is "six hundred seventy-one thousand, eighty-seven".