11638673 has 2 divisors, whose sum is σ = 11638674. Its totient is φ = 11638672.

The previous prime is 11638663. The next prime is 11638687. The reversal of 11638673 is 37683611.

11638673 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 can be written as a sum of positive squares in only one way, i.e., 8427409 + 3211264 = 2903^2 + 1792^2 .

It is a cyclic number.

It is not a de Polignac number, because 11638673 - 2¹² = 11634577 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11638603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5819336 + 5819337.

It is an arithmetic number, because the mean of its divisors is an integer number (5819337).

Almost surely, 2^11638673 is an apocalyptic number.

It is an amenable number.

11638673 is a deficient number, since it is larger than the sum of its proper divisors (1).

11638673 is an equidigital number, since it uses as much as digits as its factorization.

11638673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 35.

The square root of 11638673 is about 3411.5499410092. The cubic root of 11638673 is about 226.6215238339.

The spelling of 11638673 in words is "eleven million, six hundred thirty-eight thousand, six hundred seventy-three".