86812666 has 8 divisors (see below), whose sum is σ = 132989760. Its totient is φ = 42482748.

The previous prime is 86812651. The next prime is 86812681. The reversal of 86812666 is 66621868.

It is an interprime number because it is at equal distance from previous prime (86812651) and next prime (86812681).

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461676 + ... + 461863.

It is an arithmetic number, because the mean of its divisors is an integer number (16623720).

Almost surely, 2^86812666 is an apocalyptic number.

86812666 is a deficient number, since it is larger than the sum of its proper divisors (46177094).

86812666 is a wasteful number, since it uses less digits than its factorization.

86812666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923588.

The product of its digits is 165888, while the sum is 43.

The square root of 86812666 is about 9317.3314849264. The cubic root of 86812666 is about 442.7864930556.

It can be divided in two parts, 86812 and 666, that added together give a palindrome (87478).

The spelling of 86812666 in words is "eighty-six million, eight hundred twelve thousand, six hundred sixty-six".