6463280 has 40 divisors (see below), whose sum is σ = 15146352. Its totient is φ = 2564864.

The previous prime is 6463279. The next prime is 6463307. The reversal of 6463280 is 823646.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13607 + ... + 14073.

Almost surely, 2^6463280 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 6463280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7573176).

6463280 is an abundant number, since it is smaller than the sum of its proper divisors (8683072).

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

6463280 is a wasteful number, since it uses less digits than its factorization.

6463280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653 (or 647 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 6463280 is about 2542.2981729136. The cubic root of 6463280 is about 186.2734637046.

The spelling of 6463280 in words is "six million, four hundred sixty-three thousand, two hundred eighty".