3605669 has 2 divisors, whose sum is σ = 3605670. Its totient is φ = 3605668.

The previous prime is 3605659. The next prime is 3605671. The reversal of 3605669 is 9665063.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3062500 + 543169 = 1750^2 + 737^2 .

It is an emirp because it is prime and its reverse (9665063) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3605669 - 2⁴ = 3605653 is a prime.

It is a super-2 number, since 2×3605669² = 26001697875122, which contains 22 as substring.

Together with 3605671, 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 (3605629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1802834 + 1802835.

It is an arithmetic number, because the mean of its divisors is an integer number (1802835).

Almost surely, 2^3605669 is an apocalyptic number.

It is an amenable number.

3605669 is a deficient number, since it is larger than the sum of its proper divisors (1).

3605669 is an equidigital number, since it uses as much as digits as its factorization.

3605669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 3605669 is about 1898.8599211106. The cubic root of 3605669 is about 153.3422925872.

The spelling of 3605669 in words is "three million, six hundred five thousand, six hundred sixty-nine".