6448540 has 24 divisors (see below), whose sum is σ = 15476832. Its totient is φ = 2210880.

The previous prime is 6448537. The next prime is 6448553. The reversal of 6448540 is 458446.

6448540 = T₂₆₆ + T₂₆₇ + ... + T₃₈₅.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22891 + ... + 23170.

It is an arithmetic number, because the mean of its divisors is an integer number (644868).

Almost surely, 2^6448540 is an apocalyptic number.

It is an amenable number.

6448540 is an abundant number, since it is smaller than the sum of its proper divisors (9028292).

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

6448540 is a wasteful number, since it uses less digits than its factorization.

6448540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46077 (or 46075 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 6448540 is about 2539.3975663531. The cubic root of 6448540 is about 186.1317523372.

The spelling of 6448540 in words is "six million, four hundred forty-eight thousand, five hundred forty".