5611643 has 2 divisors, whose sum is σ = 5611644. Its totient is φ = 5611642.

The previous prime is 5611637. The next prime is 5611663. The reversal of 5611643 is 3461165.

5611643 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5611643 - 2⁶ = 5611579 is a prime.

It is not a weakly prime, because it can be changed into another prime (5611603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2805821 + 2805822.

It is an arithmetic number, because the mean of its divisors is an integer number (2805822).

Almost surely, 2^5611643 is an apocalyptic number.

5611643 is a deficient number, since it is larger than the sum of its proper divisors (1).

5611643 is an equidigital number, since it uses as much as digits as its factorization.

5611643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2160, while the sum is 26.

The square root of 5611643 is about 2368.8906686464. The cubic root of 5611643 is about 177.7037849919.

The spelling of 5611643 in words is "five million, six hundred eleven thousand, six hundred forty-three".