646671140706 has 8 divisors (see below), whose sum is σ = 1293342281424. Its totient is φ = 215557046900.

The previous prime is 646671140699. The next prime is 646671140741. The reversal of 646671140706 is 607041176646.

It is a sphenic number, since it is the product of 3 distinct primes.

646671140706 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 53889261720 + ... + 53889261731.

It is an arithmetic number, because the mean of its divisors is an integer number (161667785178).

Almost surely, 2^646671140706 is an apocalyptic number.

646671140706 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

646671140706 is a wasteful number, since it uses less digits than its factorization.

646671140706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107778523456.

The product of its (nonzero) digits is 1016064, while the sum is 48.

The spelling of 646671140706 in words is "six hundred forty-six billion, six hundred seventy-one million, one hundred forty thousand, seven hundred six".