11715973 has 4 divisors (see below), whose sum is σ = 11723020. Its totient is φ = 11708928.

The previous prime is 11715967. The next prime is 11715983. The reversal of 11715973 is 37951711.

11715973 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 37951711 = 7 ⋅5421673.

It can be written as a sum of positive squares in 2 ways, for example, as 6796449 + 4919524 = 2607^2 + 2218^2 .

It is a cyclic number.

It is not a de Polignac number, because 11715973 - 2¹⁷ = 11584901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11715943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 511 + ... + 4867.

It is an arithmetic number, because the mean of its divisors is an integer number (2930755).

Almost surely, 2^11715973 is an apocalyptic number.

It is an amenable number.

11715973 is a deficient number, since it is larger than the sum of its proper divisors (7047).

11715973 is an equidigital number, since it uses as much as digits as its factorization.

11715973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7046.

The product of its digits is 6615, while the sum is 34.

The square root of 11715973 is about 3422.8603535640. The cubic root of 11715973 is about 227.1221308417.

The spelling of 11715973 in words is "eleven million, seven hundred fifteen thousand, nine hundred seventy-three".