6446312717 has 4 divisors (see below), whose sum is σ = 6942182940. Its totient is φ = 5950442496.

The previous prime is 6446312713. The next prime is 6446312729. The reversal of 6446312717 is 7172136446.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1796572996 + 4649739721 = 42386^2 + 68189^2 .

It is a cyclic number.

It is not a de Polignac number, because 6446312717 - 2² = 6446312713 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6446312711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247935092 + ... + 247935117.

It is an arithmetic number, because the mean of its divisors is an integer number (1735545735).

Almost surely, 2^6446312717 is an apocalyptic number.

It is an amenable number.

6446312717 is a deficient number, since it is larger than the sum of its proper divisors (495870223).

6446312717 is a wasteful number, since it uses less digits than its factorization.

6446312717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495870222.

The product of its digits is 169344, while the sum is 41.

The square root of 6446312717 is about 80288.9327180278. The cubic root of 6446312717 is about 1861.1032031139.

The spelling of 6446312717 in words is "six billion, four hundred forty-six million, three hundred twelve thousand, seven hundred seventeen".