86670281 has 2 divisors, whose sum is σ = 86670282. Its totient is φ = 86670280.

The previous prime is 86670239. The next prime is 86670289. The reversal of 86670281 is 18207668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58675600 + 27994681 = 7660^2 + 5291^2 .

It is a cyclic number.

It is not a de Polignac number, because 86670281 - 2²² = 82475977 is a prime.

It is a super-2 number, since 2×86670281² = 15023475217237922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (86670289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43335140 + 43335141.

It is an arithmetic number, because the mean of its divisors is an integer number (43335141).

Almost surely, 2^86670281 is an apocalyptic number.

It is an amenable number.

86670281 is a deficient number, since it is larger than the sum of its proper divisors (1).

86670281 is an equidigital number, since it uses as much as digits as its factorization.

86670281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 86670281 is about 9309.6874813283. The cubic root of 86670281 is about 442.5442831825.

The spelling of 86670281 in words is "eighty-six million, six hundred seventy thousand, two hundred eighty-one".