3628321 has 2 divisors, whose sum is σ = 3628322. Its totient is φ = 3628320.

The previous prime is 3628309. The next prime is 3628337. The reversal of 3628321 is 1238263.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2030625 + 1597696 = 1425^2 + 1264^2 .

It is a cyclic number.

It is not a de Polignac number, because 3628321 - 2⁷ = 3628193 is a prime.

It is not a weakly prime, because it can be changed into another prime (3628351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1814160 + 1814161.

It is an arithmetic number, because the mean of its divisors is an integer number (1814161).

Almost surely, 2^3628321 is an apocalyptic number.

It is an amenable number.

3628321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3628321 is an equidigital number, since it uses as much as digits as its factorization.

3628321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 25.

The square root of 3628321 is about 1904.8152141350. The cubic root of 3628321 is about 153.6627380656.

The spelling of 3628321 in words is "three million, six hundred twenty-eight thousand, three hundred twenty-one".