86400066 has 8 divisors (see below), whose sum is σ = 172800144. Its totient is φ = 28800020.

The previous prime is 86400047. The next prime is 86400071. The reversal of 86400066 is 66000468.

It is a happy number.

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

86400066 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7200000 + ... + 7200011.

It is an arithmetic number, because the mean of its divisors is an integer number (21600018).

Almost surely, 2^86400066 is an apocalyptic number.

86400066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

86400066 is a wasteful number, since it uses less digits than its factorization.

86400066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14400016.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 86400066 is about 9295.1635811319. The cubic root of 86400066 is about 442.0838924044.

The spelling of 86400066 in words is "eighty-six million, four hundred thousand, sixty-six".