64073533 has 4 divisors (see below), whose sum is σ = 64292508. Its totient is φ = 63854560.

The previous prime is 64073521. The next prime is 64073551. The reversal of 64073533 is 33537046.

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 26594649 + 37478884 = 5157^2 + 6122^2 .

It is a cyclic number.

It is not a de Polignac number, because 64073533 - 2⁵ = 64073501 is a prime.

It is a super-2 number, since 2×64073533² = 8210835262204178, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64073495 and 64073504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64073563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109048 + ... + 109633.

It is an arithmetic number, because the mean of its divisors is an integer number (16073127).

Almost surely, 2^64073533 is an apocalyptic number.

It is an amenable number.

64073533 is a deficient number, since it is larger than the sum of its proper divisors (218975).

64073533 is a wasteful number, since it uses less digits than its factorization.

64073533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218974.

The product of its (nonzero) digits is 22680, while the sum is 31.

The square root of 64073533 is about 8004.5944931645. The cubic root of 64073533 is about 400.1531351166.

The spelling of 64073533 in words is "sixty-four million, seventy-three thousand, five hundred thirty-three".