7681916 has 24 divisors (see below), whose sum is σ = 14878080. Its totient is φ = 3441200.

The previous prime is 7681889. The next prime is 7681937. The reversal of 7681916 is 6191867.

It is a self number, because there is not a number n which added to its sum of digits gives 7681916.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1895 + ... + 4353.

It is an arithmetic number, because the mean of its divisors is an integer number (619920).

Almost surely, 2^7681916 is an apocalyptic number.

It is an amenable number.

7681916 is a deficient number, since it is larger than the sum of its proper divisors (7196164).

7681916 is a wasteful number, since it uses less digits than its factorization.

7681916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545 (or 2543 counting only the distinct ones).

The product of its digits is 18144, while the sum is 38.

The square root of 7681916 is about 2771.6269590261. The cubic root of 7681916 is about 197.3133717431.

The spelling of 7681916 in words is "seven million, six hundred eighty-one thousand, nine hundred sixteen".