6448617667 has 8 divisors (see below), whose sum is σ = 6828775200. Its totient is φ = 6068552064.

The previous prime is 6448617661. The next prime is 6448617673. The reversal of 6448617667 is 7667168446.

It is an interprime number because it is at equal distance from previous prime (6448617661) and next prime (6448617673).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6448617667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6448617661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165834 + ... + 200992.

It is an arithmetic number, because the mean of its divisors is an integer number (853596900).

Almost surely, 2^6448617667 is an apocalyptic number.

6448617667 is a deficient number, since it is larger than the sum of its proper divisors (380157533).

6448617667 is a wasteful number, since it uses less digits than its factorization.

6448617667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45965.

The product of its digits is 8128512, while the sum is 55.

The square root of 6448617667 is about 80303.2855305435. The cubic root of 6448617667 is about 1861.3249959866.

The spelling of 6448617667 in words is "six billion, four hundred forty-eight million, six hundred seventeen thousand, six hundred sixty-seven".