6455240 has 64 divisors (see below), whose sum is σ = 16796160. Its totient is φ = 2206720.

The previous prime is 6455233. The next prime is 6455261. The reversal of 6455240 is 425546.

It is an unprimeable number.

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, 7049 + ... + 7911.

It is an arithmetic number, because the mean of its divisors is an integer number (262440).

Almost surely, 2^6455240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6455240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8398080).

6455240 is an abundant number, since it is smaller than the sum of its proper divisors (10340920).

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

6455240 is a wasteful number, since it uses less digits than its factorization.

6455240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902 (or 898 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 6455240 is about 2540.7164343940. The cubic root of 6455240 is about 186.1961933365.

It can be divided in two parts, 645 and 5240, that added together give a palindrome (5885).

The spelling of 6455240 in words is "six million, four hundred fifty-five thousand, two hundred forty".