646848974017 has 8 divisors (see below), whose sum is σ = 680929104960. Its totient is φ = 612772387920.

The previous prime is 646848973973. The next prime is 646848974027. The reversal of 646848974017 is 710479848646.

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 646848974017 - 2¹¹ = 646848971969 is a prime.

It is a super-2 number, since 2×646848974017² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 646848974017.

It is not an unprimeable number, because it can be changed into a prime (646848974027) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 507493 + ... + 1245490.

It is an arithmetic number, because the mean of its divisors is an integer number (85116138120).

Almost surely, 2^646848974017 is an apocalyptic number.

It is an amenable number.

646848974017 is a deficient number, since it is larger than the sum of its proper divisors (34080130943).

646848974017 is a wasteful number, since it uses less digits than its factorization.

646848974017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772423.

The product of its (nonzero) digits is 65028096, while the sum is 64.

The spelling of 646848974017 in words is "six hundred forty-six billion, eight hundred forty-eight million, nine hundred seventy-four thousand, seventeen".