11817867 has 8 divisors (see below), whose sum is σ = 16586560. Its totient is φ = 7463880.

The previous prime is 11817863. The next prime is 11817893. The reversal of 11817867 is 76871811.

11817867 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11817867 - 2² = 11817863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11817863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103609 + ... + 103722.

It is an arithmetic number, because the mean of its divisors is an integer number (2073320).

Almost surely, 2^11817867 is an apocalyptic number.

11817867 is a deficient number, since it is larger than the sum of its proper divisors (4768693).

11817867 is a wasteful number, since it uses less digits than its factorization.

11817867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207353.

The product of its digits is 18816, while the sum is 39.

The square root of 11817867 is about 3437.7124661612. The cubic root of 11817867 is about 227.7786594630.

The spelling of 11817867 in words is "eleven million, eight hundred seventeen thousand, eight hundred sixty-seven".