6448860 has 72 divisors (see below), whose sum is σ = 21346416. Its totient is φ = 1562880.

The previous prime is 6448853. The next prime is 6448861. The reversal of 6448860 is 688446.

6448860 is a `hidden beast` number, since 644 + 8 + 8 + 6 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6448861) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 352 + ... + 3608.

It is an arithmetic number, because the mean of its divisors is an integer number (296478).

Almost surely, 2^6448860 is an apocalyptic number.

6448860 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6448860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10673208).

6448860 is an abundant number, since it is smaller than the sum of its proper divisors (14897556).

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

6448860 is a wasteful number, since it uses less digits than its factorization.

6448860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3283 (or 3278 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 6448860 is about 2539.4605726414. The cubic root of 6448860 is about 186.1348311310.

The spelling of 6448860 in words is "six million, four hundred forty-eight thousand, eight hundred sixty".