6445448 has 32 divisors (see below), whose sum is σ = 12972960. Its totient is φ = 2991360.

The previous prime is 6445447. The next prime is 6445457. The reversal of 6445448 is 8445446.

It is a super-3 number, since 3×6445448³ (a number of 21 digits) contains 333 as substring.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (6445441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11003 + ... + 11573.

It is an arithmetic number, because the mean of its divisors is an integer number (405405).

Almost surely, 2^6445448 is an apocalyptic number.

6445448 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

6445448 is an abundant number, since it is smaller than the sum of its proper divisors (6527512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6445448 is a wasteful number, since it uses less digits than its factorization.

6445448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677 (or 673 counting only the distinct ones).

The product of its digits is 61440, while the sum is 35.

The square root of 6445448 is about 2538.7886875437. The cubic root of 6445448 is about 186.1019982436.

The spelling of 6445448 in words is "six million, four hundred forty-five thousand, four hundred forty-eight".