7668736 has 22 divisors (see below), whose sum is σ = 15332030. Its totient is φ = 3833856.

The previous prime is 7668709. The next prime is 7668757. The reversal of 7668736 is 6378667.

It can be written as a sum of positive squares in only one way, i.e., 6553600 + 1115136 = 2560^2 + 1056^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7668692 and 7668701.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2721 + ... + 4768.

Almost surely, 2^7668736 is an apocalyptic number.

It is an amenable number.

7668736 is a deficient number, since it is larger than the sum of its proper divisors (7663294).

7668736 is an equidigital number, since it uses as much as digits as its factorization.

7668736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7509 (or 7491 counting only the distinct ones).

The product of its digits is 254016, while the sum is 43.

The square root of 7668736 is about 2769.2482734490. The cubic root of 7668736 is about 197.2004624571.

The spelling of 7668736 in words is "seven million, six hundred sixty-eight thousand, seven hundred thirty-six".