6920495977 has 2 divisors, whose sum is σ = 6920495978. Its totient is φ = 6920495976.

The previous prime is 6920495969. The next prime is 6920496007. The reversal of 6920495977 is 7795940296.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6909599376 + 10896601 = 83124^2 + 3301^2 .

It is a cyclic number.

It is not a de Polignac number, because 6920495977 - 2³ = 6920495969 is a prime.

It is not a weakly prime, because it can be changed into another prime (6920405977) by changing a digit.

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, 3460247988 + 3460247989.

It is an arithmetic number, because the mean of its divisors is an integer number (3460247989).

Almost surely, 2^6920495977 is an apocalyptic number.

It is an amenable number.

6920495977 is a deficient number, since it is larger than the sum of its proper divisors (1).

6920495977 is an equidigital number, since it uses as much as digits as its factorization.

6920495977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8573040, while the sum is 58.

The square root of 6920495977 is about 83189.5184323121. The cubic root of 6920495977 is about 1905.6614128760.

The spelling of 6920495977 in words is "six billion, nine hundred twenty million, four hundred ninety-five thousand, nine hundred seventy-seven".