646108716927 has 8 divisors (see below), whose sum is σ = 861504284160. Its totient is φ = 430726147160.

The previous prime is 646108716923. The next prime is 646108716943. The reversal of 646108716927 is 729617801646.

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

It is a cyclic number.

It is not a de Polignac number, because 646108716927 - 2² = 646108716923 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646108716923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3132777 + ... + 3332642.

It is an arithmetic number, because the mean of its divisors is an integer number (107688035520).

Almost surely, 2^646108716927 is an apocalyptic number.

646108716927 is a deficient number, since it is larger than the sum of its proper divisors (215395567233).

646108716927 is a wasteful number, since it uses less digits than its factorization.

646108716927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6498733.

The product of its (nonzero) digits is 6096384, while the sum is 57.

The spelling of 646108716927 in words is "six hundred forty-six billion, one hundred eight million, seven hundred sixteen thousand, nine hundred twenty-seven".