6493634568 has 112 divisors (see below), whose sum is σ = 19329114780. Its totient is φ = 2037187584.

The previous prime is 6493634549. The next prime is 6493634593. The reversal of 6493634568 is 8654363946.

6493634568 is a `hidden beast` number, since 6 + 49 + 3 + 6 + 34 + 568 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6361338564 + 132296004 = 79758^2 + 11502^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 66396 + ... + 131892.

Almost surely, 2^6493634568 is an apocalyptic number.

6493634568 is a gapful number since it is divisible by the number (68) 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 6493634568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9664557390).

6493634568 is an abundant number, since it is smaller than the sum of its proper divisors (12835480212).

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

6493634568 is a wasteful number, since it uses less digits than its factorization.

6493634568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65538 (or 65519 counting only the distinct ones).

The product of its digits is 11197440, while the sum is 54.

The square root of 6493634568 is about 80583.0910799530. The cubic root of 6493634568 is about 1865.6461731291.

The spelling of 6493634568 in words is "six billion, four hundred ninety-three million, six hundred thirty-four thousand, five hundred sixty-eight".