64547 has 4 divisors (see below), whose sum is σ = 73776. Its totient is φ = 55320.

The previous prime is 64513. The next prime is 64553. The reversal of 64547 is 74546.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74546 = 2 ⋅37273.

It is a cyclic number.

It is not a de Polignac number, because 64547 - 2⁶ = 64483 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 64547.

It is not an unprimeable number, because it can be changed into a prime (64567) 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, 4604 + ... + 4617.

It is an arithmetic number, because the mean of its divisors is an integer number (18444).

2⁶⁴⁵⁴⁷ is an apocalyptic number.

64547 is a deficient number, since it is larger than the sum of its proper divisors (9229).

64547 is an equidigital number, since it uses as much as digits as its factorization.

64547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9228.

The product of its digits is 3360, while the sum is 26.

The square root of 64547 is about 254.0610162933. The cubic root of 64547 is about 40.1136352036.

Subtracting 64547 from its reverse (74546), we obtain a palindrome (9999).

The spelling of 64547 in words is "sixty-four thousand, five hundred forty-seven".