3608621 has 2 divisors, whose sum is σ = 3608622. Its totient is φ = 3608620.

The previous prime is 3608569. The next prime is 3608639. The reversal of 3608621 is 1268063.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3062500 + 546121 = 1750^2 + 739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3608621 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3608681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1804310 + 1804311.

It is an arithmetic number, because the mean of its divisors is an integer number (1804311).

Almost surely, 2^3608621 is an apocalyptic number.

It is an amenable number.

3608621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3608621 is an equidigital number, since it uses as much as digits as its factorization.

3608621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 3608621 is about 1899.6370706006. The cubic root of 3608621 is about 153.3841288335.

The spelling of 3608621 in words is "three million, six hundred eight thousand, six hundred twenty-one".