11866047 has 8 divisors (see below), whose sum is σ = 15838080. Its totient is φ = 7902360.

The previous prime is 11866039. The next prime is 11866061. The reversal of 11866047 is 74066811.

It is a happy number.

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

It is not a de Polignac number, because 11866047 - 2³ = 11866039 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 11865999 and 11866017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11866247) 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, 3022 + ... + 5732.

It is an arithmetic number, because the mean of its divisors is an integer number (1979760).

Almost surely, 2^11866047 is an apocalyptic number.

11866047 is a deficient number, since it is larger than the sum of its proper divisors (3972033).

11866047 is a wasteful number, since it uses less digits than its factorization.

11866047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4173.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 11866047 is about 3444.7129053087. The cubic root of 11866047 is about 228.0877816808.

The spelling of 11866047 in words is "eleven million, eight hundred sixty-six thousand, forty-seven".