8672218 has 8 divisors (see below), whose sum is σ = 13456980. Its totient is φ = 4186560.

The previous prime is 8672207. The next prime is 8672239. The reversal of 8672218 is 8122768.

It can be written as a sum of positive squares in 2 ways, for example, as 7856809 + 815409 = 2803^2 + 903^2 .

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

It is an unprimeable number.

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, 74703 + ... + 74818.

Almost surely, 2^8672218 is an apocalyptic number.

8672218 is a deficient number, since it is larger than the sum of its proper divisors (4784762).

8672218 is a wasteful number, since it uses less digits than its factorization.

8672218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149552.

The product of its digits is 10752, while the sum is 34.

The square root of 8672218 is about 2944.8629849282. The cubic root of 8672218 is about 205.4518528067.

The spelling of 8672218 in words is "eight million, six hundred seventy-two thousand, two hundred eighteen".