86660000 has 120 divisors (see below), whose sum is σ = 244046880. Its totient is φ = 29664000.

The previous prime is 86659987. The next prime is 86660003. The reversal of 86660000 is 6668.

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (86660003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 139691 + ... + 140309.

It is an arithmetic number, because the mean of its divisors is an integer number (2033724).

Almost surely, 2^86660000 is an apocalyptic number.

86660000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 86660000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122023440).

86660000 is an abundant number, since it is smaller than the sum of its proper divisors (157386880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86660000 is an equidigital number, since it uses as much as digits as its factorization.

86660000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656 (or 633 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 86660000 is about 9309.1352981896. The cubic root of 86660000 is about 442.5267839981.

Adding to 86660000 its reverse (6668), we get a palindrome (86666668).

The spelling of 86660000 in words is "eighty-six million, six hundred sixty thousand".