8478684 has 18 divisors (see below), whose sum is σ = 21432320. Its totient is φ = 2826216.

The previous prime is 8478671. The next prime is 8478689. The reversal of 8478684 is 4868748.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8478689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117724 + ... + 117795.

Almost surely, 2^8478684 is an apocalyptic number.

It is an amenable number.

8478684 is an abundant number, since it is smaller than the sum of its proper divisors (12953636).

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

8478684 is a wasteful number, since it uses less digits than its factorization.

8478684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235529 (or 235524 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The square root of 8478684 is about 2911.8179888173. The cubic root of 8478684 is about 203.9120151142.

The spelling of 8478684 in words is "eight million, four hundred seventy-eight thousand, six hundred eighty-four".