86319617 has 2 divisors, whose sum is σ = 86319618. Its totient is φ = 86319616.

The previous prime is 86319601. The next prime is 86319643. The reversal of 86319617 is 71691368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49547521 + 36772096 = 7039^2 + 6064^2 .

It is a cyclic number.

It is not a de Polignac number, because 86319617 - 2⁴ = 86319601 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86319647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43159808 + 43159809.

It is an arithmetic number, because the mean of its divisors is an integer number (43159809).

Almost surely, 2^86319617 is an apocalyptic number.

It is an amenable number.

86319617 is a deficient number, since it is larger than the sum of its proper divisors (1).

86319617 is an equidigital number, since it uses as much as digits as its factorization.

86319617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 41.

The square root of 86319617 is about 9290.8351077823. The cubic root of 86319617 is about 441.9466384534.

The spelling of 86319617 in words is "eighty-six million, three hundred nineteen thousand, six hundred seventeen".