86564281 has 2 divisors, whose sum is σ = 86564282. Its totient is φ = 86564280.

The previous prime is 86564279. The next prime is 86564287. The reversal of 86564281 is 18246568.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61763881 + 24800400 = 7859^2 + 4980^2 .

It is a cyclic number.

It is not a de Polignac number, because 86564281 - 2¹ = 86564279 is a prime.

It is a super-2 number, since 2×86564281² = 14986749490093922, which contains 22 as substring.

Together with 86564279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (86564287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43282140 + 43282141.

It is an arithmetic number, because the mean of its divisors is an integer number (43282141).

Almost surely, 2^86564281 is an apocalyptic number.

It is an amenable number.

86564281 is a deficient number, since it is larger than the sum of its proper divisors (1).

86564281 is an equidigital number, since it uses as much as digits as its factorization.

86564281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92160, while the sum is 40.

The square root of 86564281 is about 9303.9927450531. The cubic root of 86564281 is about 442.3637952059.

The spelling of 86564281 in words is "eighty-six million, five hundred sixty-four thousand, two hundred eighty-one".