7988648 has 16 divisors (see below), whose sum is σ = 15112980. Its totient is φ = 3958528.

The previous prime is 7988641. The next prime is 7988663. The reversal of 7988648 is 8468897.

It can be written as a sum of positive squares in 2 ways, for example, as 7963684 + 24964 = 2822^2 + 158^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7988596 and 7988605.

It is not an unprimeable number, because it can be changed into a prime (7988641) 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 3 ways as a sum of consecutive naturals, for example, 3515 + ... + 5322.

Almost surely, 2^7988648 is an apocalyptic number.

It is an amenable number.

7988648 is a deficient number, since it is larger than the sum of its proper divisors (7124332).

7988648 is a wasteful number, since it uses less digits than its factorization.

7988648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8956 (or 8952 counting only the distinct ones).

The product of its digits is 774144, while the sum is 50.

The square root of 7988648 is about 2826.4196432943. The cubic root of 7988648 is about 199.9053552189.

Subtracting 7988648 from its reverse (8468897), we obtain a square (480249 = 693²).

The spelling of 7988648 in words is "seven million, nine hundred eighty-eight thousand, six hundred forty-eight".