6500705280 has 176 divisors, whose sum is σ = 21697282944. Its totient is φ = 1658060800.

The previous prime is 6500705227. The next prime is 6500705329. The reversal of 6500705280 is 825070056.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 344080 + ... + 362480.

Almost surely, 2^6500705280 is an apocalyptic number.

6500705280 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 6500705280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10848641472).

6500705280 is an abundant number, since it is smaller than the sum of its proper divisors (15196577664).

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

6500705280 is a wasteful number, since it uses less digits than its factorization.

6500705280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18452 (or 18434 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 6500705280 is about 80626.9513252238. The cubic root of 6500705280 is about 1866.3230750820.

The spelling of 6500705280 in words is "six billion, five hundred million, seven hundred five thousand, two hundred eighty".