6681654 has 48 divisors (see below), whose sum is σ = 17422080. Its totient is φ = 1807920.

The previous prime is 6681637. The next prime is 6681671. The reversal of 6681654 is 4561866.

It is an interprime number because it is at equal distance from previous prime (6681637) and next prime (6681671).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 999 + ... + 3789.

It is an arithmetic number, because the mean of its divisors is an integer number (362960).

Almost surely, 2^6681654 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6681654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8711040).

6681654 is an abundant number, since it is smaller than the sum of its proper divisors (10740426).

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

6681654 is a wasteful number, since it uses less digits than its factorization.

6681654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2825 (or 2822 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 6681654 is about 2584.8895527662. The cubic root of 6681654 is about 188.3481364266.

The spelling of 6681654 in words is "six million, six hundred eighty-one thousand, six hundred fifty-four".