11678 has 4 divisors (see below), whose sum is σ = 17520. Its totient is φ = 5838.

The previous prime is 11677. The next prime is 11681. The reversal of 11678 is 87611.

11678 is nontrivially palindromic in base 4.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87611 = 79 ⋅1109.

It is a Curzon number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2918 + ... + 2921.

It is an arithmetic number, because the mean of its divisors is an integer number (4380).

2¹¹⁶⁷⁸ is an apocalyptic number.

11678 is a deficient number, since it is larger than the sum of its proper divisors (5842).

11678 is an equidigital number, since it uses as much as digits as its factorization.

11678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5841.

The product of its digits is 336, while the sum is 23.

The square root of 11678 is about 108.0647953776. The cubic root of 11678 is about 22.6876487758.

The spelling of 11678 in words is "eleven thousand, six hundred seventy-eight".