3355661 has 2 divisors, whose sum is σ = 3355662. Its totient is φ = 3355660.

The previous prime is 3355643. The next prime is 3355663. The reversal of 3355661 is 1665533.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2706025 + 649636 = 1645^2 + 806^2 .

It is an emirp because it is prime and its reverse (1665533) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3355661 is a prime.

It is a super-2 number, since 2×3355661² = 22520921493842, which contains 22 as substring.

Together with 3355663, 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 (3355663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1677830 + 1677831.

It is an arithmetic number, because the mean of its divisors is an integer number (1677831).

Almost surely, 2^3355661 is an apocalyptic number.

It is an amenable number.

3355661 is a deficient number, since it is larger than the sum of its proper divisors (1).

3355661 is an equidigital number, since it uses as much as digits as its factorization.

3355661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100, while the sum is 29.

The square root of 3355661 is about 1831.8463363503. The cubic root of 3355661 is about 149.7129473184.

The spelling of 3355661 in words is "three million, three hundred fifty-five thousand, six hundred sixty-one".