6486440 has 32 divisors (see below), whose sum is σ = 15068160. Its totient is φ = 2510400.

The previous prime is 6486439. The next prime is 6486443. The reversal of 6486440 is 446846.

It is a junction number, because it is equal to n+sod(n) for n = 6486397 and 6486406.

It is not an unprimeable number, because it can be changed into a prime (6486443) 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, 1376 + ... + 3855.

It is an arithmetic number, because the mean of its divisors is an integer number (470880).

Almost surely, 2^6486440 is an apocalyptic number.

It is an amenable number.

6486440 is an abundant number, since it is smaller than the sum of its proper divisors (8581720).

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

6486440 is a wasteful number, since it uses less digits than its factorization.

6486440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5273 (or 5269 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 6486440 is about 2546.8490336100. The cubic root of 6486440 is about 186.4956909498.

The spelling of 6486440 in words is "six million, four hundred eighty-six thousand, four hundred forty".