64397 has 4 divisors (see below), whose sum is σ = 65376. Its totient is φ = 63420.

The previous prime is 64381. The next prime is 64399. The reversal of 64397 is 79346.

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 a cyclic number.

It is not a de Polignac number, because 64397 - 2⁴ = 64381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 383 + ... + 524.

It is an arithmetic number, because the mean of its divisors is an integer number (16344).

2⁶⁴³⁹⁷ is an apocalyptic number.

It is an amenable number.

64397 is a deficient number, since it is larger than the sum of its proper divisors (979).

64397 is an equidigital number, since it uses as much as digits as its factorization.

64397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 978.

The product of its digits is 4536, while the sum is 29.

The square root of 64397 is about 253.7656399121. The cubic root of 64397 is about 40.0825379036.

It can be divided in two parts, 6439 and 7, that added together give a palindrome (6446).

The spelling of 64397 in words is "sixty-four thousand, three hundred ninety-seven".