6497505280 has 208 divisors, whose sum is σ = 18136053504. Its totient is φ = 2188247040.

The previous prime is 6497505269. The next prime is 6497505317. The reversal of 6497505280 is 825057946.

It is a self number, because there is not a number n which added to its sum of digits gives 6497505280.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8744589 + ... + 8745331.

Almost surely, 2^6497505280 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 6497505280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9068026752).

6497505280 is an abundant number, since it is smaller than the sum of its proper divisors (11638548224).

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

6497505280 is an equidigital number, since it uses as much as digits as its factorization.

6497505280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840 (or 818 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 46.

The square root of 6497505280 is about 80607.1044015352. The cubic root of 6497505280 is about 1866.0167896456.

The spelling of 6497505280 in words is "six billion, four hundred ninety-seven million, five hundred five thousand, two hundred eighty".