6654537872 has 80 divisors (see below), whose sum is σ = 13522944000. Its totient is φ = 3168668160.

The previous prime is 6654537839. The next prime is 6654537893. The reversal of 6654537872 is 2787354566.

It is a happy 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 15 ways as a sum of consecutive naturals, for example, 9385454 + ... + 9386162.

It is an arithmetic number, because the mean of its divisors is an integer number (169036800).

Almost surely, 2^6654537872 is an apocalyptic number.

6654537872 is a gapful number since it is divisible by the number (62) 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 6654537872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6761472000).

6654537872 is an abundant number, since it is smaller than the sum of its proper divisors (6868406128).

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

6654537872 is a wasteful number, since it uses less digits than its factorization.

6654537872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1024 (or 1018 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 53.

The square root of 6654537872 is about 81575.3508849334. The cubic root of 6654537872 is about 1880.9300016167.

The spelling of 6654537872 in words is "six billion, six hundred fifty-four million, five hundred thirty-seven thousand, eight hundred seventy-two".