6920872897 has 2 divisors, whose sum is σ = 6920872898. Its totient is φ = 6920872896.

The previous prime is 6920872879. The next prime is 6920872943. The reversal of 6920872897 is 7982780296.

Together with previous prime (6920872879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6871746816 + 49126081 = 82896^2 + 7009^2 .

It is a cyclic number.

It is not a de Polignac number, because 6920872897 - 2¹¹ = 6920870849 is a prime.

It is not a weakly prime, because it can be changed into another prime (6920872807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3460436448 + 3460436449.

It is an arithmetic number, because the mean of its divisors is an integer number (3460436449).

Almost surely, 2^6920872897 is an apocalyptic number.

It is an amenable number.

6920872897 is a deficient number, since it is larger than the sum of its proper divisors (1).

6920872897 is an equidigital number, since it uses as much as digits as its factorization.

6920872897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6096384, while the sum is 58.

The square root of 6920872897 is about 83191.7838310972. The cubic root of 6920872897 is about 1905.6960090890.

The spelling of 6920872897 in words is "six billion, nine hundred twenty million, eight hundred seventy-two thousand, eight hundred ninety-seven".