189764 has 6 divisors (see below), whose sum is σ = 332094. Its totient is φ = 94880.

The previous prime is 189757. The next prime is 189767. The reversal of 189764 is 467981.

It can be written as a sum of positive squares in only one way, i.e., 153664 + 36100 = 392^2 + 190^2 .

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 as a sum of consecutive naturals, namely, 23717 + ... + 23724.

It is an arithmetic number, because the mean of its divisors is an integer number (55349).

2¹⁸⁹⁷⁶⁴ is an apocalyptic number.

It is an amenable number.

189764 is a deficient number, since it is larger than the sum of its proper divisors (142330).

189764 is a wasteful number, since it uses less digits than its factorization.

189764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47445 (or 47443 counting only the distinct ones).

The product of its digits is 12096, while the sum is 35.

The square root of 189764 is about 435.6190996731. The cubic root of 189764 is about 57.4651584765.

The spelling of 189764 in words is "one hundred eighty-nine thousand, seven hundred sixty-four".