64534133 has 4 divisors (see below), whose sum is σ = 64695468. Its totient is φ = 64372800.

The previous prime is 64534111. The next prime is 64534147. The reversal of 64534133 is 33143546.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51523684 + 13010449 = 7178^2 + 3607^2 .

It is a cyclic number.

It is not a de Polignac number, because 64534133 - 2⁶ = 64534069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64534096 and 64534105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64534153) 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, 80066 + ... + 80867.

It is an arithmetic number, because the mean of its divisors is an integer number (16173867).

Almost surely, 2^64534133 is an apocalyptic number.

It is an amenable number.

64534133 is a deficient number, since it is larger than the sum of its proper divisors (161335).

64534133 is a wasteful number, since it uses less digits than its factorization.

64534133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161334.

The product of its digits is 12960, while the sum is 29.

The square root of 64534133 is about 8033.3139488010. The cubic root of 64534133 is about 401.1096956752.

Adding to 64534133 its reverse (33143546), we get a palindrome (97677679).

The spelling of 64534133 in words is "sixty-four million, five hundred thirty-four thousand, one hundred thirty-three".