8478681 has 8 divisors (see below), whose sum is σ = 11364864. Its totient is φ = 5622480.

The previous prime is 8478671. The next prime is 8478689. The reversal of 8478681 is 1868748.

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

It is not a de Polignac number, because 8478681 - 2⁷ = 8478553 is a prime.

It is a super-2 number, since 2×8478681² = 143776062999522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 7 ways as a sum of consecutive naturals, for example, 6826 + ... + 7971.

It is an arithmetic number, because the mean of its divisors is an integer number (1420608).

Almost surely, 2^8478681 is an apocalyptic number.

It is an amenable number.

8478681 is a deficient number, since it is larger than the sum of its proper divisors (2886183).

8478681 is a wasteful number, since it uses less digits than its factorization.

8478681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14991.

The product of its digits is 86016, while the sum is 42.

The square root of 8478681 is about 2911.8174736752. The cubic root of 8478681 is about 203.9119910643.

The spelling of 8478681 in words is "eight million, four hundred seventy-eight thousand, six hundred eighty-one".