6491775360 has 512 divisors, whose sum is σ = 24816844800. Its totient is φ = 1412554752.

The previous prime is 6491775299. The next prime is 6491775371. The reversal of 6491775360 is 635771946.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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 63 ways as a sum of consecutive naturals, for example, 27162121 + ... + 27162359.

It is an arithmetic number, because the mean of its divisors is an integer number (48470400).

Almost surely, 2^6491775360 is an apocalyptic number.

6491775360 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 6491775360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12408422400).

6491775360 is an abundant number, since it is smaller than the sum of its proper divisors (18325069440).

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

6491775360 is a wasteful number, since it uses less digits than its factorization.

6491775360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 48.

The square root of 6491775360 is about 80571.5542856162. The cubic root of 6491775360 is about 1865.4681035984.

The spelling of 6491775360 in words is "six billion, four hundred ninety-one million, seven hundred seventy-five thousand, three hundred sixty".