86443666 has 8 divisors (see below), whose sum is σ = 129864240. Its totient is φ = 43155588.

The previous prime is 86443663. The next prime is 86443723. The reversal of 86443666 is 66634468.

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

It is not an unprimeable number, because it can be changed into a prime (86443661) 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 3 ways as a sum of consecutive naturals, for example, 31476 + ... + 34111.

It is an arithmetic number, because the mean of its divisors is an integer number (16233030).

Almost surely, 2^86443666 is an apocalyptic number.

86443666 is a deficient number, since it is larger than the sum of its proper divisors (43420574).

86443666 is a wasteful number, since it uses less digits than its factorization.

86443666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66248.

The product of its digits is 497664, while the sum is 43.

The square root of 86443666 is about 9297.5085910151. The cubic root of 86443666 is about 442.1582427196.

The spelling of 86443666 in words is "eighty-six million, four hundred forty-three thousand, six hundred sixty-six".