86917513 has 2 divisors, whose sum is σ = 86917514. Its totient is φ = 86917512.

The previous prime is 86917471. The next prime is 86917531. The reversal of 86917513 is 31571968.

Together with next prime (86917531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65415744 + 21501769 = 8088^2 + 4637^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86917513 is a prime.

It is a super-2 number, since 2×86917513² = 15109308132210338, which contains 22 as substring.

It is equal to p_5048698 and since 86917513 and 5048698 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (86917013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43458756 + 43458757.

It is an arithmetic number, because the mean of its divisors is an integer number (43458757).

Almost surely, 2^86917513 is an apocalyptic number.

It is an amenable number.

86917513 is a deficient number, since it is larger than the sum of its proper divisors (1).

86917513 is an equidigital number, since it uses as much as digits as its factorization.

86917513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 40.

The square root of 86917513 is about 9322.9562371600. The cubic root of 86917513 is about 442.9646781078.

The spelling of 86917513 in words is "eighty-six million, nine hundred seventeen thousand, five hundred thirteen".