671606388006 has 32 divisors (see below), whose sum is σ = 1423222254720. Its totient is φ = 210552345216.

The previous prime is 671606387981. The next prime is 671606388017. The reversal of 671606388006 is 600883606176.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 671606388006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2161516 + ... + 2452623.

It is an arithmetic number, because the mean of its divisors is an integer number (44475695460).

Almost surely, 2^671606388006 is an apocalyptic number.

671606388006 is an abundant number, since it is smaller than the sum of its proper divisors (751615866714).

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

671606388006 is a wasteful number, since it uses less digits than its factorization.

671606388006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4615588.

The product of its (nonzero) digits is 1741824, while the sum is 51.

The spelling of 671606388006 in words is "six hundred seventy-one billion, six hundred six million, three hundred eighty-eight thousand, six".