11973671 has 4 divisors (see below), whose sum is σ = 11988144. Its totient is φ = 11959200.

The previous prime is 11973659. The next prime is 11973677. The reversal of 11973671 is 17637911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11973671 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 (11973677) 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 in 3 ways as a sum of consecutive naturals, for example, 5915 + ... + 7676.

It is an arithmetic number, because the mean of its divisors is an integer number (2997036).

Almost surely, 2^11973671 is an apocalyptic number.

11973671 is a deficient number, since it is larger than the sum of its proper divisors (14473).

11973671 is an equidigital number, since it uses as much as digits as its factorization.

11973671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14472.

The product of its digits is 7938, while the sum is 35.

The square root of 11973671 is about 3460.2992645146. The cubic root of 11973671 is about 228.7752860061.

The spelling of 11973671 in words is "eleven million, nine hundred seventy-three thousand, six hundred seventy-one".