84405884666 has 8 divisors (see below), whose sum is σ = 126612780960. Its totient is φ = 42201624348.

The previous prime is 84405884609. The next prime is 84405884671. The reversal of 84405884666 is 66648850448.

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

It is a Curzon number.

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, 576896 + ... + 708251.

It is an arithmetic number, because the mean of its divisors is an integer number (15826597620).

Almost surely, 2^84405884666 is an apocalyptic number.

84405884666 is a deficient number, since it is larger than the sum of its proper divisors (42206896294).

84405884666 is a wasteful number, since it uses less digits than its factorization.

84405884666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317988.

The product of its (nonzero) digits is 35389440, while the sum is 59.

The spelling of 84405884666 in words is "eighty-four billion, four hundred five million, eight hundred eighty-four thousand, six hundred sixty-six".