6672681 has 6 divisors (see below), whose sum is σ = 9638330. Its totient is φ = 4448448.

The previous prime is 6672671. The next prime is 6672683. The reversal of 6672681 is 1862766.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3920400 + 2752281 = 1980^2 + 1659^2 .

It is not a de Polignac number, because 6672681 - 2¹⁷ = 6541609 is a prime.

It is a super-2 number, since 2×6672681² = 89049343455522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6672683) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 370696 + ... + 370713.

Almost surely, 2^6672681 is an apocalyptic number.

It is an amenable number.

6672681 is a deficient number, since it is larger than the sum of its proper divisors (2965649).

6672681 is a wasteful number, since it uses less digits than its factorization.

6672681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741415 (or 741412 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 6672681 is about 2583.1533055551. The cubic root of 6672681 is about 188.2637858086.

The spelling of 6672681 in words is "six million, six hundred seventy-two thousand, six hundred eighty-one".