3684761321 has 2 divisors, whose sum is σ = 3684761322. Its totient is φ = 3684761320.

The previous prime is 3684761317. The next prime is 3684761323. The reversal of 3684761321 is 1231674863.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2523655696 + 1161105625 = 50236^2 + 34075^2 .

It is a cyclic number.

It is not a de Polignac number, because 3684761321 - 2² = 3684761317 is a prime.

Together with 3684761323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3684761323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1842380660 + 1842380661.

It is an arithmetic number, because the mean of its divisors is an integer number (1842380661).

Almost surely, 2^3684761321 is an apocalyptic number.

It is an amenable number.

3684761321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3684761321 is an equidigital number, since it uses as much as digits as its factorization.

3684761321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 41.

The square root of 3684761321 is about 60702.2348929593. The cubic root of 3684761321 is about 1544.5540857298.

The spelling of 3684761321 in words is "three billion, six hundred eighty-four million, seven hundred sixty-one thousand, three hundred twenty-one".