6981697677 has 16 divisors (see below), whose sum is σ = 9431769600. Its totient is φ = 4593377712.

The previous prime is 6981697631. The next prime is 6981697703. The reversal of 6981697677 is 7767961896.

It is not a de Polignac number, because 6981697677 - 2¹¹ = 6981695629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6981697577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43074 + ... + 125772.

It is an arithmetic number, because the mean of its divisors is an integer number (589485600).

Almost surely, 2^6981697677 is an apocalyptic number.

It is an amenable number.

6981697677 is a deficient number, since it is larger than the sum of its proper divisors (2450071923).

6981697677 is a wasteful number, since it uses less digits than its factorization.

6981697677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83072.

The product of its digits is 48009024, while the sum is 66.

The square root of 6981697677 is about 83556.5537645013. The cubic root of 6981697677 is about 1911.2625331383.

The spelling of 6981697677 in words is "six billion, nine hundred eighty-one million, six hundred ninety-seven thousand, six hundred seventy-seven".