7766648 has 16 divisors (see below), whose sum is σ = 14748000. Its totient is φ = 3833856.

The previous prime is 7766621. The next prime is 7766657. The reversal of 7766648 is 8466677.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 7766599 and 7766608.

It is a congruent number.

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, 5513 + ... + 6776.

It is an arithmetic number, because the mean of its divisors is an integer number (921750).

Almost surely, 2^7766648 is an apocalyptic number.

It is an amenable number.

7766648 is a deficient number, since it is larger than the sum of its proper divisors (6981352).

7766648 is a wasteful number, since it uses less digits than its factorization.

7766648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12374 (or 12370 counting only the distinct ones).

The product of its digits is 338688, while the sum is 44.

The square root of 7766648 is about 2786.8706464420. The cubic root of 7766648 is about 198.0361801721.

The spelling of 7766648 in words is "seven million, seven hundred sixty-six thousand, six hundred forty-eight".