6330781 has 8 divisors (see below), whose sum is σ = 6732000. Its totient is φ = 5936400.

The previous prime is 6330767. The next prime is 6330799. The reversal of 6330781 is 1870336.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6330781 - 2¹¹ = 6328733 is a prime.

It is a super-2 number, since 2×6330781² = 80157576139922, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6330581) 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 7 ways as a sum of consecutive naturals, for example, 270 + ... + 3568.

It is an arithmetic number, because the mean of its divisors is an integer number (841500).

Almost surely, 2^6330781 is an apocalyptic number.

It is an amenable number.

6330781 is a deficient number, since it is larger than the sum of its proper divisors (401219).

6330781 is a wasteful number, since it uses less digits than its factorization.

6330781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3419.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 6330781 is about 2516.1043301103. The cubic root of 6330781 is about 184.9917795227.

The spelling of 6330781 in words is "six million, three hundred thirty thousand, seven hundred eighty-one".