671000339987 has 2 divisors, whose sum is σ = 671000339988. Its totient is φ = 671000339986.

The previous prime is 671000339939. The next prime is 671000340041. The reversal of 671000339987 is 789933000176.

It is a happy number.

671000339987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 671000339987 - 2²⁴ = 670983562771 is a prime.

It is not a weakly prime, because it can be changed into another prime (671000339887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335500169993 + 335500169994.

It is an arithmetic number, because the mean of its divisors is an integer number (335500169994).

Almost surely, 2^671000339987 is an apocalyptic number.

671000339987 is a deficient number, since it is larger than the sum of its proper divisors (1).

671000339987 is an equidigital number, since it uses as much as digits as its factorization.

671000339987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1714608, while the sum is 53.

The spelling of 671000339987 in words is "six hundred seventy-one billion, three hundred thirty-nine thousand, nine hundred eighty-seven".