6427681 has 16 divisors (see below), whose sum is σ = 7439040. Its totient is φ = 5503680.

The previous prime is 6427679. The next prime is 6427703. The reversal of 6427681 is 1867246.

It is not a de Polignac number, because 6427681 - 2¹ = 6427679 is a prime.

It is a super-2 number, since 2×6427681² = 82630166075522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

Its product of digits (16128) is a multiple of the sum of its prime divisors (576).

It is not an unprimeable number, because it can be changed into a prime (6427651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12846 + ... + 13336.

It is an arithmetic number, because the mean of its divisors is an integer number (464940).

Almost surely, 2^6427681 is an apocalyptic number.

It is an amenable number.

6427681 is a deficient number, since it is larger than the sum of its proper divisors (1011359).

6427681 is a wasteful number, since it uses less digits than its factorization.

6427681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 576.

The product of its digits is 16128, while the sum is 34.

The square root of 6427681 is about 2535.2871632223. The cubic root of 6427681 is about 185.9308429837.

The spelling of 6427681 in words is "six million, four hundred twenty-seven thousand, six hundred eighty-one".