66879 has 8 divisors (see below), whose sum is σ = 99120. Its totient is φ = 44568.

The previous prime is 66877. The next prime is 66883. The reversal of 66879 is 97866.

It is not a de Polignac number, because 66879 - 2¹ = 66877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66877) 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, 1212 + ... + 1265.

It is an arithmetic number, because the mean of its divisors is an integer number (12390).

2⁶⁶⁸⁷⁹ is an apocalyptic number.

66879 is a deficient number, since it is larger than the sum of its proper divisors (32241).

66879 is a wasteful number, since it uses less digits than its factorization.

66879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2486 (or 2480 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 66879 is about 258.6097445960. The cubic root of 66879 is about 40.5910161555.

It can be divided in two parts, 668 and 79, that added together give a palindrome (747).

The spelling of 66879 in words is "sixty-six thousand, eight hundred seventy-nine".