64493 has 12 divisors (see below), whose sum is σ = 78204. Its totient is φ = 52800.

The previous prime is 64489. The next prime is 64499. The reversal of 64493 is 39446.

It can be written as a sum of positive squares in 2 ways, for example, as 5929 + 58564 = 77^2 + 242^2 .

It is not a de Polignac number, because 64493 - 2² = 64489 is a prime.

It is a Duffinian number.

It is a Curzon number.

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 64493.

It is not an unprimeable number, because it can be changed into a prime (64499) 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 11 ways as a sum of consecutive naturals, for example, 1553 + ... + 1593.

It is an arithmetic number, because the mean of its divisors is an integer number (6517).

2⁶⁴⁴⁹³ is an apocalyptic number.

It is an amenable number.

64493 is a deficient number, since it is larger than the sum of its proper divisors (13711).

64493 is a wasteful number, since it uses less digits than its factorization.

64493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76 (or 65 counting only the distinct ones).

The product of its digits is 2592, while the sum is 26.

The square root of 64493 is about 253.9547203735. The cubic root of 64493 is about 40.1024457311.

It can be divided in two parts, 644 and 93, that added together give a palindrome (737).

The spelling of 64493 in words is "sixty-four thousand, four hundred ninety-three".