213064 has 8 divisors (see below), whose sum is σ = 399510. Its totient is φ = 106528.

The previous prime is 213043. The next prime is 213067. The reversal of 213064 is 460312.

It can be written as a sum of positive squares in only one way, i.e., 116964 + 96100 = 342^2 + 310^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (213067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13309 + ... + 13324.

2²¹³⁰⁶⁴ is an apocalyptic number.

It is an amenable number.

213064 is a deficient number, since it is larger than the sum of its proper divisors (186446).

213064 is a wasteful number, since it uses less digits than its factorization.

213064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26639 (or 26635 counting only the distinct ones).

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

The square root of 213064 is about 461.5885613834. The cubic root of 213064 is about 59.7269070379.

Adding to 213064 its reverse (460312), we get a palindrome (673376).

The spelling of 213064 in words is "two hundred thirteen thousand, sixty-four".