3616421 has 2 divisors, whose sum is σ = 3616422. Its totient is φ = 3616420.

The previous prime is 3616409. The next prime is 3616423. The reversal of 3616421 is 1246163.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2927521 + 688900 = 1711^2 + 830^2 .

It is a cyclic number.

It is not a de Polignac number, because 3616421 - 2⁶ = 3616357 is a prime.

Together with 3616423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3616423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1808210 + 1808211.

It is an arithmetic number, because the mean of its divisors is an integer number (1808211).

Almost surely, 2^3616421 is an apocalyptic number.

It is an amenable number.

3616421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3616421 is an equidigital number, since it uses as much as digits as its factorization.

3616421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 23.

The square root of 3616421 is about 1901.6889861384. The cubic root of 3616421 is about 153.4945620839.

The spelling of 3616421 in words is "three million, six hundred sixteen thousand, four hundred twenty-one".