664010285 has 4 divisors (see below), whose sum is σ = 796812348. Its totient is φ = 531208224.

The previous prime is 664010279. The next prime is 664010387. The reversal of 664010285 is 582010466.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 582010466 = 2 ⋅291005233.

It can be written as a sum of positive squares in 2 ways, for example, as 145491844 + 518518441 = 12062^2 + 22771^2 .

It is a cyclic number.

It is not a de Polignac number, because 664010285 - 2¹⁰ = 664009261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66401024 + ... + 66401033.

It is an arithmetic number, because the mean of its divisors is an integer number (199203087).

Almost surely, 2^664010285 is an apocalyptic number.

It is an amenable number.

664010285 is a deficient number, since it is larger than the sum of its proper divisors (132802063).

664010285 is a wasteful number, since it uses less digits than its factorization.

664010285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132802062.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 664010285 is about 25768.3970203814. The cubic root of 664010285 is about 872.4186386750.

The spelling of 664010285 in words is "six hundred sixty-four million, ten thousand, two hundred eighty-five".