66146 has 4 divisors (see below), whose sum is σ = 99222. Its totient is φ = 33072.

The previous prime is 66137. The next prime is 66161. The reversal of 66146 is 64166.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64166 = 2 ⋅32083.

It can be written as a sum of positive squares in only one way, i.e., 57121 + 9025 = 239^2 + 95^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 66146.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16535 + ... + 16538.

2⁶⁶¹⁴⁶ is an apocalyptic number.

66146 is a deficient number, since it is larger than the sum of its proper divisors (33076).

66146 is a wasteful number, since it uses less digits than its factorization.

66146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33075.

The product of its digits is 864, while the sum is 23.

The square root of 66146 is about 257.1886467168. The cubic root of 66146 is about 40.4421773027.

It can be divided in two parts, 661 and 46, that added together give a palindrome (707).

The spelling of 66146 in words is "sixty-six thousand, one hundred forty-six".