6681746 has 4 divisors (see below), whose sum is σ = 10022622. Its totient is φ = 3340872.

The previous prime is 6681733. The next prime is 6681751. The reversal of 6681746 is 6471866.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6446521 + 235225 = 2539^2 + 485^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1670435 + ... + 1670438.

Almost surely, 2^6681746 is an apocalyptic number.

6681746 is a deficient number, since it is larger than the sum of its proper divisors (3340876).

6681746 is a wasteful number, since it uses less digits than its factorization.

6681746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3340875.

The product of its digits is 48384, while the sum is 38.

The square root of 6681746 is about 2584.9073484363. The cubic root of 6681746 is about 188.3490008807.

The spelling of 6681746 in words is "six million, six hundred eighty-one thousand, seven hundred forty-six".