11415643 has 2 divisors, whose sum is σ = 11415644. Its totient is φ = 11415642.

The previous prime is 11415629. The next prime is 11415673. The reversal of 11415643 is 34651411.

11415643 is digitally balanced in base 2, 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 11415643 - 2⁵ = 11415611 is a prime.

It is not a weakly prime, because it can be changed into another prime (11415673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5707821 + 5707822.

It is an arithmetic number, because the mean of its divisors is an integer number (5707822).

Almost surely, 2^11415643 is an apocalyptic number.

11415643 is a deficient number, since it is larger than the sum of its proper divisors (1).

11415643 is an equidigital number, since it uses as much as digits as its factorization.

11415643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 25.

The square root of 11415643 is about 3378.7043374643. The cubic root of 11415643 is about 225.1646071182.

The spelling of 11415643 in words is "eleven million, four hundred fifteen thousand, six hundred forty-three".