6681628 has 6 divisors (see below), whose sum is σ = 11692856. Its totient is φ = 3340812.

The previous prime is 6681589. The next prime is 6681637. The reversal of 6681628 is 8261866.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835200 + ... + 835207.

Almost surely, 2^6681628 is an apocalyptic number.

It is an amenable number.

6681628 is a deficient number, since it is larger than the sum of its proper divisors (5011228).

6681628 is a wasteful number, since it uses less digits than its factorization.

6681628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670411 (or 1670409 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 6681628 is about 2584.8845235329. The cubic root of 6681628 is about 188.3478921229.

The spelling of 6681628 in words is "six million, six hundred eighty-one thousand, six hundred twenty-eight".