11667973 has 4 divisors (see below), whose sum is σ = 11682720. Its totient is φ = 11653228.

The previous prime is 11667959. The next prime is 11667977. The reversal of 11667973 is 37976611.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11667973 is a prime.

It is a super-2 number, since 2×11667973² = 272283187857458, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11667977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6115 + ... + 7792.

It is an arithmetic number, because the mean of its divisors is an integer number (2920680).

Almost surely, 2^11667973 is an apocalyptic number.

It is an amenable number.

11667973 is a deficient number, since it is larger than the sum of its proper divisors (14747).

11667973 is an equidigital number, since it uses as much as digits as its factorization.

11667973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14746.

The product of its digits is 47628, while the sum is 40.

The square root of 11667973 is about 3415.8414775865. The cubic root of 11667973 is about 226.8115353705.

The spelling of 11667973 in words is "eleven million, six hundred sixty-seven thousand, nine hundred seventy-three".