6678081 has 6 divisors (see below), whose sum is σ = 9646130. Its totient is φ = 4452048.

The previous prime is 6678079. The next prime is 6678109. The reversal of 6678081 is 1808766.

It can be written as a sum of positive squares in only one way, i.e., 6548481 + 129600 = 2559^2 + 360^2 .

It is not a de Polignac number, because 6678081 - 2¹ = 6678079 is a prime.

It is a super-2 number, since 2×6678081² = 89193531685122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6678281) 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, 370996 + ... + 371013.

Almost surely, 2^6678081 is an apocalyptic number.

It is an amenable number.

6678081 is a deficient number, since it is larger than the sum of its proper divisors (2968049).

6678081 is a wasteful number, since it uses less digits than its factorization.

6678081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742015 (or 742012 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 6678081 is about 2584.1983283022. The cubic root of 6678081 is about 188.3145575212.

The spelling of 6678081 in words is "six million, six hundred seventy-eight thousand, eighty-one".