385766 has 4 divisors (see below), whose sum is σ = 578652. Its totient is φ = 192882.

The previous prime is 385741. The next prime is 385771. The reversal of 385766 is 667583.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 667583 = 7 ⋅95369.

It is a congruent number.

It is an unprimeable number.

385766 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96440 + ... + 96443.

It is an arithmetic number, because the mean of its divisors is an integer number (144663).

2³⁸⁵⁷⁶⁶ is an apocalyptic number.

385766 is a deficient number, since it is larger than the sum of its proper divisors (192886).

385766 is a wasteful number, since it uses less digits than its factorization.

385766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192885.

The product of its digits is 30240, while the sum is 35.

The square root of 385766 is about 621.1006359681. The cubic root of 385766 is about 72.7960781609.

The spelling of 385766 in words is "three hundred eighty-five thousand, seven hundred sixty-six".