86600257 has 2 divisors, whose sum is σ = 86600258. Its totient is φ = 86600256.

The previous prime is 86600249. The next prime is 86600263. The reversal of 86600257 is 75200668.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58308496 + 28291761 = 7636^2 + 5319^2 .

It is a cyclic number.

It is not a de Polignac number, because 86600257 - 2³ = 86600249 is a prime.

It is not a weakly prime, because it can be changed into another prime (86600287) 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, 43300128 + 43300129.

It is an arithmetic number, because the mean of its divisors is an integer number (43300129).

Almost surely, 2^86600257 is an apocalyptic number.

It is an amenable number.

86600257 is a deficient number, since it is larger than the sum of its proper divisors (1).

86600257 is an equidigital number, since it uses as much as digits as its factorization.

86600257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 86600257 is about 9305.9259077214. The cubic root of 86600257 is about 442.4250686531.

The spelling of 86600257 in words is "eighty-six million, six hundred thousand, two hundred fifty-seven".