6448975 has 12 divisors (see below), whose sum is σ = 8612296. Its totient is φ = 4762080.

The previous prime is 6448973. The next prime is 6448979. The reversal of 6448975 is 5798446.

It is not a de Polignac number, because 6448975 - 2¹ = 6448973 is a prime.

It is an Ulam number.

It is a Duffinian number.

6448975 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6448973) 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 11 ways as a sum of consecutive naturals, for example, 9597 + ... + 10246.

Almost surely, 2^6448975 is an apocalyptic number.

6448975 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

6448975 is a deficient number, since it is larger than the sum of its proper divisors (2163321).

6448975 is a wasteful number, since it uses less digits than its factorization.

6448975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19866 (or 19861 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The square root of 6448975 is about 2539.4832151444. The cubic root of 6448975 is about 186.1359375477.

The spelling of 6448975 in words is "six million, four hundred forty-eight thousand, nine hundred seventy-five".