86078513 has 2 divisors, whose sum is σ = 86078514. Its totient is φ = 86078512.

The previous prime is 86078501. The next prime is 86078521. The reversal of 86078513 is 31587068.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55696369 + 30382144 = 7463^2 + 5512^2 .

It is a cyclic number.

It is not a de Polignac number, because 86078513 - 2⁸ = 86078257 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86078533) 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, 43039256 + 43039257.

It is an arithmetic number, because the mean of its divisors is an integer number (43039257).

Almost surely, 2^86078513 is an apocalyptic number.

It is an amenable number.

86078513 is a deficient number, since it is larger than the sum of its proper divisors (1).

86078513 is an equidigital number, since it uses as much as digits as its factorization.

86078513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 86078513 is about 9277.8506670457. The cubic root of 86078513 is about 441.5347797182.

The spelling of 86078513 in words is "eighty-six million, seventy-eight thousand, five hundred thirteen".