6504552681 has 16 divisors (see below), whose sum is σ = 9681196800. Its totient is φ = 3850474320.

The previous prime is 6504552647. The next prime is 6504552713. The reversal of 6504552681 is 1862554056.

It is not a de Polignac number, because 6504552681 - 2¹⁸ = 6504290537 is a prime.

It is a super-2 number, since 2×6504552681² = 84618411159808575522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6504552641) 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 15 ways as a sum of consecutive naturals, for example, 2290531 + ... + 2293368.

It is an arithmetic number, because the mean of its divisors is an integer number (605074800).

Almost surely, 2^6504552681 is an apocalyptic number.

It is an amenable number.

6504552681 is a deficient number, since it is larger than the sum of its proper divisors (3176644119).

6504552681 is a wasteful number, since it uses less digits than its factorization.

6504552681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4583956.

The product of its (nonzero) digits is 288000, while the sum is 42.

The square root of 6504552681 is about 80650.8070697374. The cubic root of 6504552681 is about 1866.6911929423.

The spelling of 6504552681 in words is "six billion, five hundred four million, five hundred fifty-two thousand, six hundred eighty-one".