84478166 has 8 divisors (see below), whose sum is σ = 126774480. Its totient is φ = 42220008.

The previous prime is 84478099. The next prime is 84478169. The reversal of 84478166 is 66187448.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84478169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3146 + ... + 13373.

It is an arithmetic number, because the mean of its divisors is an integer number (15846810).

Almost surely, 2^84478166 is an apocalyptic number.

84478166 is a deficient number, since it is larger than the sum of its proper divisors (42296314).

84478166 is a wasteful number, since it uses less digits than its factorization.

84478166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19078.

The product of its digits is 258048, while the sum is 44.

The square root of 84478166 is about 9191.2004656628. The cubic root of 84478166 is about 438.7813489396.

The spelling of 84478166 in words is "eighty-four million, four hundred seventy-eight thousand, one hundred sixty-six".