11601643 has 2 divisors, whose sum is σ = 11601644. Its totient is φ = 11601642.

The previous prime is 11601641. The next prime is 11601659. The reversal of 11601643 is 34610611.

It is a happy number.

11601643 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 11601643 - 2¹ = 11601641 is a prime.

Together with 11601641, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11601641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5800821 + 5800822.

It is an arithmetic number, because the mean of its divisors is an integer number (5800822).

Almost surely, 2^11601643 is an apocalyptic number.

11601643 is a deficient number, since it is larger than the sum of its proper divisors (1).

11601643 is an equidigital number, since it uses as much as digits as its factorization.

11601643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 11601643 is about 3406.1184653503. The cubic root of 11601643 is about 226.3809262255.

The spelling of 11601643 in words is "eleven million, six hundred one thousand, six hundred forty-three".