11666847 has 8 divisors (see below), whose sum is σ = 15574144. Its totient is φ = 7768728.

The previous prime is 11666843. The next prime is 11666861. The reversal of 11666847 is 74866611.

It is a happy number.

11666847 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 11666847 - 2² = 11666843 is a prime.

It is a super-2 number, since 2×11666847² = 272230637842818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11666843) 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, 1638 + ... + 5100.

It is an arithmetic number, because the mean of its divisors is an integer number (1946768).

Almost surely, 2^11666847 is an apocalyptic number.

11666847 is a deficient number, since it is larger than the sum of its proper divisors (3907297).

11666847 is a wasteful number, since it uses less digits than its factorization.

11666847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4589.

The product of its digits is 48384, while the sum is 39.

The square root of 11666847 is about 3415.6766533148. The cubic root of 11666847 is about 226.8042391016.

The spelling of 11666847 in words is "eleven million, six hundred sixty-six thousand, eight hundred forty-seven".