86686836697 has 2 divisors, whose sum is σ = 86686836698. Its totient is φ = 86686836696.

The previous prime is 86686836617. The next prime is 86686836703. The reversal of 86686836697 is 79663868668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69297403536 + 17389433161 = 263244^2 + 131869^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86686836697 is a prime.

It is not a weakly prime, because it can be changed into another prime (86686836617) 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, 43343418348 + 43343418349.

It is an arithmetic number, because the mean of its divisors is an integer number (43343418349).

Almost surely, 2^86686836697 is an apocalyptic number.

It is an amenable number.

86686836697 is a deficient number, since it is larger than the sum of its proper divisors (1).

86686836697 is an equidigital number, since it uses as much as digits as its factorization.

86686836697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 752467968, while the sum is 73.

The spelling of 86686836697 in words is "eighty-six billion, six hundred eighty-six million, eight hundred thirty-six thousand, six hundred ninety-seven".