8731648 has 22 divisors (see below), whose sum is σ = 17456816. Its totient is φ = 4365312.

The previous prime is 8731643. The next prime is 8731661. The reversal of 8731648 is 8461378.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8731643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3240 + ... + 5287.

Almost surely, 2^8731648 is an apocalyptic number.

It is an amenable number.

8731648 is a deficient number, since it is larger than the sum of its proper divisors (8725168).

8731648 is an equidigital number, since it uses as much as digits as its factorization.

8731648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8547 (or 8529 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 8731648 is about 2954.9362091253. The cubic root of 8731648 is about 205.9200997201.

The spelling of 8731648 in words is "eight million, seven hundred thirty-one thousand, six hundred forty-eight".