1671260687 has 2 divisors, whose sum is σ = 1671260688. Its totient is φ = 1671260686.

The previous prime is 1671260677. The next prime is 1671260771. The reversal of 1671260687 is 7860621761.

It is a weak prime.

It is an emirp because it is prime and its reverse (7860621761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1671260687 - 2¹⁰ = 1671259663 is a prime.

It is a super-2 number, since 2×1671260687² = 5586224567823423938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1671260677) 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, 835630343 + 835630344.

It is an arithmetic number, because the mean of its divisors is an integer number (835630344).

Almost surely, 2^1671260687 is an apocalyptic number.

1671260687 is a deficient number, since it is larger than the sum of its proper divisors (1).

1671260687 is an equidigital number, since it uses as much as digits as its factorization.

1671260687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 1671260687 is about 40881.0553557513. The cubic root of 1671260687 is about 1186.7194647934.

The spelling of 1671260687 in words is "one billion, six hundred seventy-one million, two hundred sixty thousand, six hundred eighty-seven".