11975671 has 4 divisors (see below), whose sum is σ = 12094344. Its totient is φ = 11857000.

The previous prime is 11975669. The next prime is 11975683. The reversal of 11975671 is 17657911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17657911 = 3581 ⋅4931.

It is a cyclic number.

It is not a de Polignac number, because 11975671 - 2¹ = 11975669 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11975671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11978671) 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, 59185 + ... + 59386.

It is an arithmetic number, because the mean of its divisors is an integer number (3023586).

Almost surely, 2^11975671 is an apocalyptic number.

11975671 is a deficient number, since it is larger than the sum of its proper divisors (118673).

11975671 is a wasteful number, since it uses less digits than its factorization.

11975671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118672.

The product of its digits is 13230, while the sum is 37.

The square root of 11975671 is about 3460.5882447931. The cubic root of 11975671 is about 228.7880229826.

The spelling of 11975671 in words is "eleven million, nine hundred seventy-five thousand, six hundred seventy-one".