6681696 has 96 divisors (see below), whose sum is σ = 20498688. Its totient is φ = 1866240.

The previous prime is 6681683. The next prime is 6681721. The reversal of 6681696 is 6961866.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×6681696² = 89290122872832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an Ulam number.

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 15 ways as a sum of consecutive naturals, for example, 40911 + ... + 41073.

It is an arithmetic number, because the mean of its divisors is an integer number (213528).

Almost surely, 2^6681696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6681696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10249344).

6681696 is an abundant number, since it is smaller than the sum of its proper divisors (13816992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6681696 is a wasteful number, since it uses less digits than its factorization.

6681696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244 (or 236 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The square root of 6681696 is about 2584.8976768917. The cubic root of 6681696 is about 188.3485310697.

The spelling of 6681696 in words is "six million, six hundred eighty-one thousand, six hundred ninety-six".