86856023 has 2 divisors, whose sum is σ = 86856024. Its totient is φ = 86856022.

The previous prime is 86855987. The next prime is 86856037. The reversal of 86856023 is 32065868.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86856023 - 2⁶ = 86855959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86852023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43428011 + 43428012.

It is an arithmetic number, because the mean of its divisors is an integer number (43428012).

Almost surely, 2^86856023 is an apocalyptic number.

86856023 is a deficient number, since it is larger than the sum of its proper divisors (1).

86856023 is an equidigital number, since it uses as much as digits as its factorization.

86856023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 86856023 is about 9319.6578799868. The cubic root of 86856023 is about 442.8601946621.

The spelling of 86856023 in words is "eighty-six million, eight hundred fifty-six thousand, twenty-three".