66874 has 8 divisors (see below), whose sum is σ = 103860. Its totient is φ = 32256.

The previous prime is 66863. The next prime is 66877. The reversal of 66874 is 47866.

It can be written as a sum of positive squares in 2 ways, for example, as 65025 + 1849 = 255^2 + 43^2 .

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

It is a plaindrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (66877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 519 + ... + 634.

2⁶⁶⁸⁷⁴ is an apocalyptic number.

66874 is a deficient number, since it is larger than the sum of its proper divisors (36986).

66874 is a wasteful number, since it uses less digits than its factorization.

66874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184.

The product of its digits is 8064, while the sum is 31.

The square root of 66874 is about 258.6000773395. The cubic root of 66874 is about 40.5900045767.

The spelling of 66874 in words is "sixty-six thousand, eight hundred seventy-four".