86066381 has 2 divisors, whose sum is σ = 86066382. Its totient is φ = 86066380.

The previous prime is 86066377. The next prime is 86066399. The reversal of 86066381 is 18366068.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60310756 + 25755625 = 7766^2 + 5075^2 .

It is a cyclic number.

It is not a de Polignac number, because 86066381 - 2² = 86066377 is a prime.

It is a super-2 number, since 2×86066381² = 14814843876874322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86066311) 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, 43033190 + 43033191.

It is an arithmetic number, because the mean of its divisors is an integer number (43033191).

Almost surely, 2^86066381 is an apocalyptic number.

It is an amenable number.

86066381 is a deficient number, since it is larger than the sum of its proper divisors (1).

86066381 is an equidigital number, since it uses as much as digits as its factorization.

86066381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 86066381 is about 9277.1968287840. The cubic root of 86066381 is about 441.5140352783.

The spelling of 86066381 in words is "eighty-six million, sixty-six thousand, three hundred eighty-one".