6448855 has 16 divisors (see below), whose sum is σ = 9229824. Its totient is φ = 4229280.

The previous prime is 6448853. The next prime is 6448861. The reversal of 6448855 is 5588446.

It is not a de Polignac number, because 6448855 - 2¹ = 6448853 is a prime.

It is a super-2 number, since 2×6448855² = 83175461622050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6448853) 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 15 ways as a sum of consecutive naturals, for example, 3201 + ... + 4810.

It is an arithmetic number, because the mean of its divisors is an integer number (576864).

Almost surely, 2^6448855 is an apocalyptic number.

6448855 is a deficient number, since it is larger than the sum of its proper divisors (2780969).

6448855 is a wasteful number, since it uses less digits than its factorization.

6448855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8046.

The product of its digits is 153600, while the sum is 40.

The square root of 6448855 is about 2539.4595881801. The cubic root of 6448855 is about 186.1347830256.

The spelling of 6448855 in words is "six million, four hundred forty-eight thousand, eight hundred fifty-five".