11621873 has 2 divisors, whose sum is σ = 11621874. Its totient is φ = 11621872.

The previous prime is 11621843. The next prime is 11621921. The reversal of 11621873 is 37812611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11175649 + 446224 = 3343^2 + 668^2 .

It is an emirp because it is prime and its reverse (37812611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11621873 - 2⁶ = 11621809 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 (11621843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5810936 + 5810937.

It is an arithmetic number, because the mean of its divisors is an integer number (5810937).

Almost surely, 2^11621873 is an apocalyptic number.

It is an amenable number.

11621873 is a deficient number, since it is larger than the sum of its proper divisors (1).

11621873 is an equidigital number, since it uses as much as digits as its factorization.

11621873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 29.

The square root of 11621873 is about 3409.0868278763. The cubic root of 11621873 is about 226.5124313585.

The spelling of 11621873 in words is "eleven million, six hundred twenty-one thousand, eight hundred seventy-three".