7684381 has 2 divisors, whose sum is σ = 7684382. Its totient is φ = 7684380.

The previous prime is 7684367. The next prime is 7684399. The reversal of 7684381 is 1834867.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4040100 + 3644281 = 2010^2 + 1909^2 .

It is a cyclic number.

It is not a de Polignac number, because 7684381 - 2⁷ = 7684253 is a prime.

It is a super-2 number, since 2×7684381² = 118099422706322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7684381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7684301) 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 as a sum of consecutive naturals, namely, 3842190 + 3842191.

It is an arithmetic number, because the mean of its divisors is an integer number (3842191).

Almost surely, 2^7684381 is an apocalyptic number.

It is an amenable number.

7684381 is a deficient number, since it is larger than the sum of its proper divisors (1).

7684381 is an equidigital number, since it uses as much as digits as its factorization.

7684381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 37.

The square root of 7684381 is about 2772.0716080217. The cubic root of 7684381 is about 197.3344743537.

The spelling of 7684381 in words is "seven million, six hundred eighty-four thousand, three hundred eighty-one".