197723 has 4 divisors (see below), whose sum is σ = 199200. Its totient is φ = 196248.

The previous prime is 197713. The next prime is 197741. The reversal of 197723 is 327791.

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: 327791 = 181 ⋅1811.

It is a cyclic number.

It is not a de Polignac number, because 197723 - 2¹⁰ = 196699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (197713) 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, 515 + ... + 812.

It is an arithmetic number, because the mean of its divisors is an integer number (49800).

2¹⁹⁷⁷²³ is an apocalyptic number.

197723 is a deficient number, since it is larger than the sum of its proper divisors (1477).

197723 is a wasteful number, since it uses less digits than its factorization.

197723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1476.

The product of its digits is 2646, while the sum is 29.

The square root of 197723 is about 444.6605446855. The cubic root of 197723 is about 58.2575742145.

The spelling of 197723 in words is "one hundred ninety-seven thousand, seven hundred twenty-three".