6463880 has 32 divisors (see below), whose sum is σ = 14823000. Its totient is φ = 2535936.

The previous prime is 6463879. The next prime is 6463883. The reversal of 6463880 is 883646.

It can be written as a sum of positive squares in 4 ways, for example, as 4553956 + 1909924 = 2134^2 + 1382^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 6463880.

It is not an unprimeable number, because it can be changed into a prime (6463883) 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, 596 + ... + 3644.

Almost surely, 2^6463880 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 6463880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7411500).

6463880 is an abundant number, since it is smaller than the sum of its proper divisors (8359120).

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

6463880 is a wasteful number, since it uses less digits than its factorization.

6463880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3113 (or 3109 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 6463880 is about 2542.4161736427. The cubic root of 6463880 is about 186.2792275799.

The spelling of 6463880 in words is "six million, four hundred sixty-three thousand, eight hundred eighty".