8487638 has 4 divisors (see below), whose sum is σ = 12731460. Its totient is φ = 4243818.

The previous prime is 8487631. The next prime is 8487649. The reversal of 8487638 is 8367848.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8487631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2121908 + ... + 2121911.

It is an arithmetic number, because the mean of its divisors is an integer number (3182865).

Almost surely, 2^8487638 is an apocalyptic number.

8487638 is a deficient number, since it is larger than the sum of its proper divisors (4243822).

8487638 is a wasteful number, since it uses less digits than its factorization.

8487638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4243821.

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

The square root of 8487638 is about 2913.3551105212. The cubic root of 8487638 is about 203.9837709760.

The spelling of 8487638 in words is "eight million, four hundred eighty-seven thousand, six hundred thirty-eight".