86571967 has 2 divisors, whose sum is σ = 86571968. Its totient is φ = 86571966.

The previous prime is 86571959. The next prime is 86571983. The reversal of 86571967 is 76917568.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86571967 - 2³ = 86571959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86571967.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86571907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43285983 + 43285984.

It is an arithmetic number, because the mean of its divisors is an integer number (43285984).

Almost surely, 2^86571967 is an apocalyptic number.

86571967 is a deficient number, since it is larger than the sum of its proper divisors (1).

86571967 is an equidigital number, since it uses as much as digits as its factorization.

86571967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 49.

The square root of 86571967 is about 9304.4057843583. The cubic root of 86571967 is about 442.3768872398.

The spelling of 86571967 in words is "eighty-six million, five hundred seventy-one thousand, nine hundred sixty-seven".