660065333 has 4 divisors (see below), whose sum is σ = 660133068. Its totient is φ = 659997600.

The previous prime is 660065291. The next prime is 660065359. The reversal of 660065333 is 333560066.

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 239692324 + 420373009 = 15482^2 + 20503^2 .

It is a cyclic number.

It is not a de Polignac number, because 660065333 - 2¹⁸ = 659803189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 660065333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660065383) 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, 16166 + ... + 39767.

It is an arithmetic number, because the mean of its divisors is an integer number (165033267).

Almost surely, 2^660065333 is an apocalyptic number.

It is an amenable number.

660065333 is a deficient number, since it is larger than the sum of its proper divisors (67735).

660065333 is a wasteful number, since it uses less digits than its factorization.

660065333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67734.

The product of its (nonzero) digits is 29160, while the sum is 32.

The square root of 660065333 is about 25691.7366676525. The cubic root of 660065333 is about 870.6874968308.

The spelling of 660065333 in words is "six hundred sixty million, sixty-five thousand, three hundred thirty-three".