86866867 has 16 divisors (see below), whose sum is σ = 92565504. Its totient is φ = 81396000.

The previous prime is 86866859. The next prime is 86866877. The reversal of 86866867 is 76866868.

It is a cyclic number.

It is not a de Polignac number, because 86866867 - 2³ = 86866859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86866817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133938 + ... + 134584.

It is an arithmetic number, because the mean of its divisors is an integer number (5785344).

Almost surely, 2^86866867 is an apocalyptic number.

86866867 is a deficient number, since it is larger than the sum of its proper divisors (5698637).

86866867 is a wasteful number, since it uses less digits than its factorization.

86866867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810.

The product of its digits is 4644864, while the sum is 55.

The square root of 86866867 is about 9320.2396428418. The cubic root of 86866867 is about 442.8786243036.

Subtracting from 86866867 its reverse (76866868), we obtain a palindrome (9999999).

The spelling of 86866867 in words is "eighty-six million, eight hundred sixty-six thousand, eight hundred sixty-seven".