86664055 has 4 divisors (see below), whose sum is σ = 103996872. Its totient is φ = 69331240.

The previous prime is 86664041. The next prime is 86664059. The reversal of 86664055 is 55046668.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 86664055 - 2⁹ = 86663543 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 86663999 and 86664017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86664059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8666401 + ... + 8666410.

It is an arithmetic number, because the mean of its divisors is an integer number (25999218).

Almost surely, 2^86664055 is an apocalyptic number.

86664055 is a deficient number, since it is larger than the sum of its proper divisors (17332817).

86664055 is a wasteful number, since it uses less digits than its factorization.

86664055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17332816.

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 86664055 is about 9309.3530924549. The cubic root of 86664055 is about 442.5336861371.

It can be divided in two parts, 8666 and 4055, that added together give a palindrome (12721).

The spelling of 86664055 in words is "eighty-six million, six hundred sixty-four thousand, fifty-five".