64213 has 4 divisors (see below), whose sum is σ = 64780. Its totient is φ = 63648.

The previous prime is 64189. The next prime is 64217. The reversal of 64213 is 31246.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 40804 + 23409 = 202^2 + 153^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64213 is a prime.

It is a Duffinian number.

64213 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64217) 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, 48 + ... + 361.

It is an arithmetic number, because the mean of its divisors is an integer number (16195).

2⁶⁴²¹³ is an apocalyptic number.

It is an amenable number.

64213 is a deficient number, since it is larger than the sum of its proper divisors (567).

64213 is a wasteful number, since it uses less digits than its factorization.

64213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566.

The product of its digits is 144, while the sum is 16.

The square root of 64213 is about 253.4028413416. The cubic root of 64213 is about 40.0443258623.

Adding to 64213 its reverse (31246), we get a palindrome (95459).

The spelling of 64213 in words is "sixty-four thousand, two hundred thirteen".