6681437 has 4 divisors (see below), whose sum is σ = 7635936. Its totient is φ = 5726940.

The previous prime is 6681427. The next prime is 6681439. The reversal of 6681437 is 7341866.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6681437 - 2⁴ = 6681421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6681397 and 6681406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6681439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477239 + ... + 477252.

It is an arithmetic number, because the mean of its divisors is an integer number (1908984).

Almost surely, 2^6681437 is an apocalyptic number.

It is an amenable number.

6681437 is a deficient number, since it is larger than the sum of its proper divisors (954499).

6681437 is an equidigital number, since it uses as much as digits as its factorization.

6681437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954498.

The product of its digits is 24192, while the sum is 35.

The square root of 6681437 is about 2584.8475777113. The cubic root of 6681437 is about 188.3460974111.

The spelling of 6681437 in words is "six million, six hundred eighty-one thousand, four hundred thirty-seven".