66782 has 4 divisors (see below), whose sum is σ = 100176. Its totient is φ = 33390.

The previous prime is 66763. The next prime is 66791. The reversal of 66782 is 28766.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16694 + ... + 16697.

It is an arithmetic number, because the mean of its divisors is an integer number (25044).

2⁶⁶⁷⁸² is an apocalyptic number.

66782 is a deficient number, since it is larger than the sum of its proper divisors (33394).

66782 is a wasteful number, since it uses less digits than its factorization.

66782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33393.

The product of its digits is 4032, while the sum is 29.

The square root of 66782 is about 258.4221352748. The cubic root of 66782 is about 40.5713825204.

It can be divided in two parts, 66 and 782, that added together give a palindrome (848).

The spelling of 66782 in words is "sixty-six thousand, seven hundred eighty-two".