6931977716 has 6 divisors (see below), whose sum is σ = 12130961010. Its totient is φ = 3465988856.

The previous prime is 6931977709. The next prime is 6931977721. The reversal of 6931977716 is 6177791396.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4276636816 + 2655340900 = 65396^2 + 51530^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 866497211 + ... + 866497218.

It is an arithmetic number, because the mean of its divisors is an integer number (2021826835).

Almost surely, 2^6931977716 is an apocalyptic number.

It is an amenable number.

6931977716 is a deficient number, since it is larger than the sum of its proper divisors (5198983294).

6931977716 is a wasteful number, since it uses less digits than its factorization.

6931977716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1732994433 (or 1732994431 counting only the distinct ones).

The product of its digits is 3000564, while the sum is 56.

The square root of 6931977716 is about 83258.4993619270. The cubic root of 6931977716 is about 1906.7147197343.

The spelling of 6931977716 in words is "six billion, nine hundred thirty-one million, nine hundred seventy-seven thousand, seven hundred sixteen".