3670321 has 2 divisors, whose sum is σ = 3670322. Its totient is φ = 3670320.

The previous prime is 3670319. The next prime is 3670333. The reversal of 3670321 is 1230763.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2359296 + 1311025 = 1536^2 + 1145^2 .

It is a cyclic number.

It is not a de Polignac number, because 3670321 - 2¹ = 3670319 is a prime.

Together with 3670319, it forms a pair of twin primes.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 3670292 and 3670301.

It is not a weakly prime, because it can be changed into another prime (3670301) 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 as a sum of consecutive naturals, namely, 1835160 + 1835161.

It is an arithmetic number, because the mean of its divisors is an integer number (1835161).

Almost surely, 2^3670321 is an apocalyptic number.

It is an amenable number.

3670321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3670321 is an equidigital number, since it uses as much as digits as its factorization.

3670321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 3670321 is about 1915.8081845529. The cubic root of 3670321 is about 154.2533777927.

The spelling of 3670321 in words is "three million, six hundred seventy thousand, three hundred twenty-one".