6448751 has 4 divisors (see below), whose sum is σ = 6463752. Its totient is φ = 6433752.

The previous prime is 6448699. The next prime is 6448781. The reversal of 6448751 is 1578446.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6448751 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 (6448781) 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 3 ways as a sum of consecutive naturals, for example, 6836 + ... + 7721.

It is an arithmetic number, because the mean of its divisors is an integer number (1615938).

Almost surely, 2^6448751 is an apocalyptic number.

6448751 is a deficient number, since it is larger than the sum of its proper divisors (15001).

6448751 is a wasteful number, since it uses less digits than its factorization.

6448751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15000.

The product of its digits is 26880, while the sum is 35.

The square root of 6448751 is about 2539.4391113000. The cubic root of 6448751 is about 186.1337824283.

The spelling of 6448751 in words is "six million, four hundred forty-eight thousand, seven hundred fifty-one".