6340565280 has 192 divisors, whose sum is σ = 23115939840. Its totient is φ = 1430866944.

The previous prime is 6340565251. The next prime is 6340565281. The reversal of 6340565280 is 825650436.

It is not an unprimeable number, because it can be changed into a prime (6340565281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 253497 + ... + 277383.

It is an arithmetic number, because the mean of its divisors is an integer number (120395520).

Almost surely, 2^6340565280 is an apocalyptic number.

6340565280 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 6340565280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11557969920).

6340565280 is an abundant number, since it is smaller than the sum of its proper divisors (16775374560).

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

6340565280 is a wasteful number, since it uses less digits than its factorization.

6340565280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23991 (or 23983 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The square root of 6340565280 is about 79627.6665487568. Note that the first 3 decimals coincide. The cubic root of 6340565280 is about 1850.8703263106.

The spelling of 6340565280 in words is "six billion, three hundred forty million, five hundred sixty-five thousand, two hundred eighty".