8442687 has 8 divisors (see below), whose sum is σ = 12280320. Its totient is φ = 5116760.

The previous prime is 8442673. The next prime is 8442689. The reversal of 8442687 is 7862448.

8442687 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 8442687 - 2⁴ = 8442671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8442689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127887 + ... + 127952.

It is an arithmetic number, because the mean of its divisors is an integer number (1535040).

Almost surely, 2^8442687 is an apocalyptic number.

8442687 is a deficient number, since it is larger than the sum of its proper divisors (3837633).

8442687 is a wasteful number, since it uses less digits than its factorization.

8442687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255853.

The product of its digits is 86016, while the sum is 39.

The square root of 8442687 is about 2905.6302242371. The cubic root of 8442687 is about 203.6230302816.

The spelling of 8442687 in words is "eight million, four hundred forty-two thousand, six hundred eighty-seven".