3405641 has 2 divisors, whose sum is σ = 3405642. Its totient is φ = 3405640.

The previous prime is 3405637. The next prime is 3405653. The reversal of 3405641 is 1465043.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3367225 + 38416 = 1835^2 + 196^2 .

It is a cyclic number.

It is not a de Polignac number, because 3405641 - 2² = 3405637 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3405601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1702820 + 1702821.

It is an arithmetic number, because the mean of its divisors is an integer number (1702821).

Almost surely, 2^3405641 is an apocalyptic number.

It is an amenable number.

3405641 is a deficient number, since it is larger than the sum of its proper divisors (1).

3405641 is an equidigital number, since it uses as much as digits as its factorization.

3405641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 3405641 is about 1845.4378884156. The cubic root of 3405641 is about 150.4525738800.

The spelling of 3405641 in words is "three million, four hundred five thousand, six hundred forty-one".