65397 has 4 divisors (see below), whose sum is σ = 87200. Its totient is φ = 43596.

The previous prime is 65393. The next prime is 65407. The reversal of 65397 is 79356.

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.

It is not a de Polignac number, because 65397 - 2² = 65393 is a prime.

It is a D-number.

It is a Duffinian number.

65397 is a lucky number.

It is a plaindrome in base 15.

It is a nialpdrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 65397.

It is not an unprimeable number, because it can be changed into a prime (65393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10897 + ... + 10902.

It is an arithmetic number, because the mean of its divisors is an integer number (21800).

2⁶⁵³⁹⁷ is an apocalyptic number.

It is an amenable number.

65397 is a deficient number, since it is larger than the sum of its proper divisors (21803).

65397 is a wasteful number, since it uses less digits than its factorization.

65397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21802.

The product of its digits is 5670, while the sum is 30.

The square root of 65397 is about 255.7283715195. The cubic root of 65397 is about 40.2889493475.

The spelling of 65397 in words is "sixty-five thousand, three hundred ninety-seven".