664086273 has 8 divisors (see below), whose sum is σ = 885682848. Its totient is φ = 442606944.

The previous prime is 664086263. The next prime is 664086377. The reversal of 664086273 is 372680466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 664086273 - 2¹³ = 664078081 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (664086223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15111 + ... + 39452.

It is an arithmetic number, because the mean of its divisors is an integer number (110710356).

Almost surely, 2^664086273 is an apocalyptic number.

It is an amenable number.

664086273 is a deficient number, since it is larger than the sum of its proper divisors (221596575).

664086273 is a wasteful number, since it uses less digits than its factorization.

664086273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58623.

The product of its (nonzero) digits is 290304, while the sum is 42.

The square root of 664086273 is about 25769.8714199353. The cubic root of 664086273 is about 872.4519166831.

The spelling of 664086273 in words is "six hundred sixty-four million, eighty-six thousand, two hundred seventy-three".