6455040 has 108 divisors (see below), whose sum is σ = 21130872. Its totient is φ = 1679360.

The previous prime is 6455017. The next prime is 6455047. The reversal of 6455040 is 405546.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 6455040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6455047) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157420 + ... + 157460.

Almost surely, 2^6455040 is an apocalyptic number.

6455040 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 6455040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10565436).

6455040 is an abundant number, since it is smaller than the sum of its proper divisors (14675832).

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

6455040 is an equidigital number, since it uses as much as digits as its factorization.

6455040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 6455040 is about 2540.6770751121. The cubic root of 6455040 is about 186.1942703704.

The spelling of 6455040 in words is "six million, four hundred fifty-five thousand, forty".