3403661 has 2 divisors, whose sum is σ = 3403662. Its totient is φ = 3403660.

The previous prime is 3403639. The next prime is 3403663. The reversal of 3403661 is 1663043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1729225 + 1674436 = 1315^2 + 1294^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3403661 is a prime.

Together with 3403663, 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 (3403663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1701830 + 1701831.

It is an arithmetic number, because the mean of its divisors is an integer number (1701831).

Almost surely, 2^3403661 is an apocalyptic number.

It is an amenable number.

3403661 is a deficient number, since it is larger than the sum of its proper divisors (1).

3403661 is an equidigital number, since it uses as much as digits as its factorization.

3403661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 3403661 is about 1844.9013523763. The cubic root of 3403661 is about 150.4234111031.

The spelling of 3403661 in words is "three million, four hundred three thousand, six hundred sixty-one".