86500859 has 2 divisors, whose sum is σ = 86500860. Its totient is φ = 86500858.

The previous prime is 86500853. The next prime is 86500871. The reversal of 86500859 is 95800568.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86500859 is a prime.

It is not a weakly prime, because it can be changed into another prime (86500853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43250429 + 43250430.

It is an arithmetic number, because the mean of its divisors is an integer number (43250430).

Almost surely, 2^86500859 is an apocalyptic number.

86500859 is a deficient number, since it is larger than the sum of its proper divisors (1).

86500859 is an equidigital number, since it uses as much as digits as its factorization.

86500859 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 86500859 is about 9300.5837988806. The cubic root of 86500859 is about 442.2557350422.

The spelling of 86500859 in words is "eighty-six million, five hundred thousand, eight hundred fifty-nine".