6716577681 has 12 divisors (see below), whose sum is σ = 10583698320. Its totient is φ = 4070653080.

The previous prime is 6716577677. The next prime is 6716577701. The reversal of 6716577681 is 1867756176.

6716577681 is a `hidden beast` number, since 6 + 7 + 1 + 6 + 577 + 68 + 1 = 666.

It is not a de Polignac number, because 6716577681 - 2² = 6716577677 is a prime.

It is a super-3 number, since 3×6716577681³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (6716577671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33922011 + ... + 33922208.

It is an arithmetic number, because the mean of its divisors is an integer number (881974860).

Almost surely, 2^6716577681 is an apocalyptic number.

It is an amenable number.

6716577681 is a deficient number, since it is larger than the sum of its proper divisors (3867120639).

6716577681 is a wasteful number, since it uses less digits than its factorization.

6716577681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67844236 (or 67844233 counting only the distinct ones).

The product of its digits is 2963520, while the sum is 54.

The square root of 6716577681 is about 81954.7294608432. The cubic root of 6716577681 is about 1886.7571914254.

The spelling of 6716577681 in words is "six billion, seven hundred sixteen million, five hundred seventy-seven thousand, six hundred eighty-one".