86660129 has 2 divisors, whose sum is σ = 86660130. Its totient is φ = 86660128.

The previous prime is 86660111. The next prime is 86660131. The reversal of 86660129 is 92106668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66455104 + 20205025 = 8152^2 + 4495^2 .

It is a cyclic number.

It is not a de Polignac number, because 86660129 - 2¹² = 86656033 is a prime.

Together with 86660131, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 86660092 and 86660101.

It is not a weakly prime, because it can be changed into another prime (86660029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43330064 + 43330065.

It is an arithmetic number, because the mean of its divisors is an integer number (43330065).

Almost surely, 2^86660129 is an apocalyptic number.

It is an amenable number.

86660129 is a deficient number, since it is larger than the sum of its proper divisors (1).

86660129 is an equidigital number, since it uses as much as digits as its factorization.

86660129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 86660129 is about 9309.1422268649. The cubic root of 86660129 is about 442.5270035762.

The spelling of 86660129 in words is "eighty-six million, six hundred sixty thousand, one hundred twenty-nine".