86156617 has 2 divisors, whose sum is σ = 86156618. Its totient is φ = 86156616.

The previous prime is 86156611. The next prime is 86156633. The reversal of 86156617 is 71665168.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79495056 + 6661561 = 8916^2 + 2581^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86156617 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86156617.

It is not a weakly prime, because it can be changed into another prime (86156611) 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, 43078308 + 43078309.

It is an arithmetic number, because the mean of its divisors is an integer number (43078309).

Almost surely, 2^86156617 is an apocalyptic number.

It is an amenable number.

86156617 is a deficient number, since it is larger than the sum of its proper divisors (1).

86156617 is an equidigital number, since it uses as much as digits as its factorization.

86156617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 40.

The square root of 86156617 is about 9282.0588772104. The cubic root of 86156617 is about 441.6682826728.

The spelling of 86156617 in words is "eighty-six million, one hundred fifty-six thousand, six hundred seventeen".