671004076669 has 2 divisors, whose sum is σ = 671004076670. Its totient is φ = 671004076668.

The previous prime is 671004076643. The next prime is 671004076723. The reversal of 671004076669 is 966670400176.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 373284340900 + 297719735769 = 610970^2 + 545637^2 .

It is a cyclic number.

It is not a de Polignac number, because 671004076669 - 2¹⁹ = 671003552381 is a prime.

It is a super-2 number, since 2×671004076669² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671004071669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335502038334 + 335502038335.

It is an arithmetic number, because the mean of its divisors is an integer number (335502038335).

Almost surely, 2^671004076669 is an apocalyptic number.

It is an amenable number.

671004076669 is a deficient number, since it is larger than the sum of its proper divisors (1).

671004076669 is an equidigital number, since it uses as much as digits as its factorization.

671004076669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2286144, while the sum is 52.

The spelling of 671004076669 in words is "six hundred seventy-one billion, four million, seventy-six thousand, six hundred sixty-nine".