66886 has 8 divisors (see below), whose sum is σ = 102384. Its totient is φ = 32760.

The previous prime is 66883. The next prime is 66889. The reversal of 66886 is 68866.

It is a happy number.

66886 is nontrivially palindromic in base 15.

It is an interprime number because it is at equal distance from previous prime (66883) and next prime (66889).

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

It is a plaindrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66883) 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, 210 + ... + 421.

It is an arithmetic number, because the mean of its divisors is an integer number (12798).

2⁶⁶⁸⁸⁶ is an apocalyptic number.

66886 is a deficient number, since it is larger than the sum of its proper divisors (35498).

66886 is a wasteful number, since it uses less digits than its factorization.

66886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686.

The product of its digits is 13824, while the sum is 34.

The square root of 66886 is about 258.6232781480. The cubic root of 66886 is about 40.5924322812.

The spelling of 66886 in words is "sixty-six thousand, eight hundred eighty-six".