671065678086 has 32 divisors (see below), whose sum is σ = 1354816320000. Its totient is φ = 221575525920.

The previous prime is 671065677959. The next prime is 671065678133. The reversal of 671065678086 is 680876560176.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 2274915 + ... + 2552913.

It is an arithmetic number, because the mean of its divisors is an integer number (42338010000).

Almost surely, 2^671065678086 is an apocalyptic number.

671065678086 is an abundant number, since it is smaller than the sum of its proper divisors (683750641914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671065678086 is a wasteful number, since it uses less digits than its factorization.

671065678086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281804.

The product of its (nonzero) digits is 20321280, while the sum is 60.

The spelling of 671065678086 in words is "six hundred seventy-one billion, sixty-five million, six hundred seventy-eight thousand, eighty-six".