86695739497 has 2 divisors, whose sum is σ = 86695739498. Its totient is φ = 86695739496.

The previous prime is 86695739479. The next prime is 86695739551. The reversal of 86695739497 is 79493759668.

Together with previous prime (86695739479) 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., 85608322921 + 1087416576 = 292589^2 + 32976^2 .

It is a cyclic number.

It is not a de Polignac number, because 86695739497 - 2²³ = 86687350889 is a prime.

It is not a weakly prime, because it can be changed into another prime (86695731497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43347869748 + 43347869749.

It is an arithmetic number, because the mean of its divisors is an integer number (43347869749).

Almost surely, 2^86695739497 is an apocalyptic number.

It is an amenable number.

86695739497 is a deficient number, since it is larger than the sum of its proper divisors (1).

86695739497 is an equidigital number, since it uses as much as digits as its factorization.

86695739497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 617258880, while the sum is 73.

The spelling of 86695739497 in words is "eighty-six billion, six hundred ninety-five million, seven hundred thirty-nine thousand, four hundred ninety-seven".