6463240 has 64 divisors (see below), whose sum is σ = 17055360. Its totient is φ = 2158080.

The previous prime is 6463231. The next prime is 6463243. The reversal of 6463240 is 423646.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6463243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11199 + ... + 11761.

It is an arithmetic number, because the mean of its divisors is an integer number (266490).

Almost surely, 2^6463240 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 6463240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8527680).

6463240 is an abundant number, since it is smaller than the sum of its proper divisors (10592120).

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

6463240 is a wasteful number, since it uses less digits than its factorization.

6463240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622 (or 618 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 6463240 is about 2542.2903060036. The cubic root of 6463240 is about 186.2730794336.

Adding to 6463240 its reverse (423646), we get a palindrome (6886886).

The spelling of 6463240 in words is "six million, four hundred sixty-three thousand, two hundred forty".