189766 has 8 divisors (see below), whose sum is σ = 286560. Its totient is φ = 94248.

The previous prime is 189757. The next prime is 189767. The reversal of 189766 is 667981.

189766 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×189766² = 72022269512, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280 + ... + 676.

It is an arithmetic number, because the mean of its divisors is an integer number (35820).

2¹⁸⁹⁷⁶⁶ is an apocalyptic number.

189766 is a deficient number, since it is larger than the sum of its proper divisors (96794).

189766 is a wasteful number, since it uses less digits than its factorization.

189766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638.

The product of its digits is 18144, while the sum is 37.

The square root of 189766 is about 435.6213952505. The cubic root of 189766 is about 57.4653603587.

The spelling of 189766 in words is "one hundred eighty-nine thousand, seven hundred sixty-six".