3115643 has 2 divisors, whose sum is σ = 3115644. Its totient is φ = 3115642.

The previous prime is 3115633. The next prime is 3115657. The reversal of 3115643 is 3465113.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3115643 - 2⁴ = 3115627 is a prime.

It is not a weakly prime, because it can be changed into another prime (3115633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1557821 + 1557822.

It is an arithmetic number, because the mean of its divisors is an integer number (1557822).

Almost surely, 2^3115643 is an apocalyptic number.

3115643 is a deficient number, since it is larger than the sum of its proper divisors (1).

3115643 is an equidigital number, since it uses as much as digits as its factorization.

3115643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 23.

The square root of 3115643 is about 1765.1184096258. The cubic root of 3115643 is about 146.0548208467.

The spelling of 3115643 in words is "three million, one hundred fifteen thousand, six hundred forty-three".