6329681 has 2 divisors, whose sum is σ = 6329682. Its totient is φ = 6329680.

The previous prime is 6329677. The next prime is 6329683. The reversal of 6329681 is 1869236.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5216656 + 1113025 = 2284^2 + 1055^2 .

It is a cyclic number.

It is not a de Polignac number, because 6329681 - 2² = 6329677 is a prime.

It is a super-2 number, since 2×6329681² = 80129723123522, which contains 22 as substring.

Together with 6329683, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 14.

It is not a weakly prime, because it can be changed into another prime (6329683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3164840 + 3164841.

It is an arithmetic number, because the mean of its divisors is an integer number (3164841).

Almost surely, 2^6329681 is an apocalyptic number.

It is an amenable number.

6329681 is a deficient number, since it is larger than the sum of its proper divisors (1).

6329681 is an equidigital number, since it uses as much as digits as its factorization.

6329681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 35.

The square root of 6329681 is about 2515.8857287246. The cubic root of 6329681 is about 184.9810645338.

The spelling of 6329681 in words is "six million, three hundred twenty-nine thousand, six hundred eighty-one".