3216613 has 2 divisors, whose sum is σ = 3216614. Its totient is φ = 3216612.

The previous prime is 3216611. The next prime is 3216637. The reversal of 3216613 is 3166123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3214849 + 1764 = 1793^2 + 42^2 .

It is a cyclic number.

It is not a de Polignac number, because 3216613 - 2¹ = 3216611 is a prime.

Together with 3216611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3216611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1608306 + 1608307.

It is an arithmetic number, because the mean of its divisors is an integer number (1608307).

Almost surely, 2^3216613 is an apocalyptic number.

It is an amenable number.

3216613 is a deficient number, since it is larger than the sum of its proper divisors (1).

3216613 is an equidigital number, since it uses as much as digits as its factorization.

3216613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 22.

The square root of 3216613 is about 1793.4918455348. The cubic root of 3216613 is about 147.6158316413.

The spelling of 3216613 in words is "three million, two hundred sixteen thousand, six hundred thirteen".