6430681 has 8 divisors (see below), whose sum is σ = 6678144. Its totient is φ = 6187920.

The previous prime is 6430667. The next prime is 6430687. The reversal of 6430681 is 1860346.

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 6430681 - 2⁹ = 6430169 is a prime.

It is a super-2 number, since 2×6430681² = 82707316247522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6430687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1746 + ... + 3988.

It is an arithmetic number, because the mean of its divisors is an integer number (834768).

Almost surely, 2^6430681 is an apocalyptic number.

6430681 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

6430681 is a deficient number, since it is larger than the sum of its proper divisors (247463).

6430681 is a wasteful number, since it uses less digits than its factorization.

6430681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2351.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 6430681 is about 2535.8787431579. The cubic root of 6430681 is about 185.9597650667.

The spelling of 6430681 in words is "six million, four hundred thirty thousand, six hundred eighty-one".