6691616 has 24 divisors (see below), whose sum is σ = 13345920. Its totient is φ = 3302208.

The previous prime is 6691613. The next prime is 6691631. The reversal of 6691616 is 6161966.

It is not an unprimeable number, because it can be changed into a prime (6691613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1205 + ... + 3851.

It is an arithmetic number, because the mean of its divisors is an integer number (556080).

Almost surely, 2^6691616 is an apocalyptic number.

It is an amenable number.

6691616 is a deficient number, since it is larger than the sum of its proper divisors (6654304).

6691616 is a wasteful number, since it uses less digits than its factorization.

6691616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2736 (or 2728 counting only the distinct ones).

The product of its digits is 11664, while the sum is 35.

The square root of 6691616 is about 2586.8158032608. The cubic root of 6691616 is about 188.4416957163.

The spelling of 6691616 in words is "six million, six hundred ninety-one thousand, six hundred sixteen".