6887734057 has 2 divisors, whose sum is σ = 6887734058. Its totient is φ = 6887734056.

The previous prime is 6887734043. The next prime is 6887734079. The reversal of 6887734057 is 7504377886.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5749278976 + 1138455081 = 75824^2 + 33741^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6887734057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6887733989 and 6887734007.

It is not a weakly prime, because it can be changed into another prime (6887734027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3443867028 + 3443867029.

It is an arithmetic number, because the mean of its divisors is an integer number (3443867029).

Almost surely, 2^6887734057 is an apocalyptic number.

It is an amenable number.

6887734057 is a deficient number, since it is larger than the sum of its proper divisors (1).

6887734057 is an equidigital number, since it uses as much as digits as its factorization.

6887734057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7902720, while the sum is 55.

The square root of 6887734057 is about 82992.3734869657. The cubic root of 6887734057 is about 1902.6494944987.

The spelling of 6887734057 in words is "six billion, eight hundred eighty-seven million, seven hundred thirty-four thousand, fifty-seven".