67766 has 8 divisors (see below), whose sum is σ = 105024. Its totient is φ = 32760.

The previous prime is 67763. The next prime is 67777. The reversal of 67766 is 66776.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67763) 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, 485 + ... + 608.

It is an arithmetic number, because the mean of its divisors is an integer number (13128).

2⁶⁷⁷⁶⁶ is an apocalyptic number.

67766 is a deficient number, since it is larger than the sum of its proper divisors (37258).

67766 is a wasteful number, since it uses less digits than its factorization.

67766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126.

The product of its digits is 10584, while the sum is 32.

The square root of 67766 is about 260.3190350320. The cubic root of 67766 is about 40.7696782271.

Subtracting from 67766 its reverse (66776), we obtain a triangular number (990 = T₄₄).

The spelling of 67766 in words is "sixty-seven thousand, seven hundred sixty-six".