164397 has 4 divisors (see below), whose sum is σ = 219200. Its totient is φ = 109596.

The previous prime is 164387. The next prime is 164413. The reversal of 164397 is 793461.

It is a happy number.

164397 is nontrivially palindromic in base 6.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 793461 = 3 ⋅264487.

It is not a de Polignac number, because 164397 - 2¹⁴ = 148013 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164357) 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, 27397 + ... + 27402.

It is an arithmetic number, because the mean of its divisors is an integer number (54800).

2¹⁶⁴³⁹⁷ is an apocalyptic number.

It is an amenable number.

164397 is a deficient number, since it is larger than the sum of its proper divisors (54803).

164397 is an equidigital number, since it uses as much as digits as its factorization.

164397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54802.

The product of its digits is 4536, while the sum is 30.

The square root of 164397 is about 405.4589991602. The cubic root of 164397 is about 54.7811690498.

It can be divided in two parts, 164 and 397, that added together give a triangular number (561 = T₃₃).

The spelling of 164397 in words is "one hundred sixty-four thousand, three hundred ninety-seven".