664333011 has 12 divisors (see below), whose sum is σ = 959833888. Its totient is φ = 442777104.

The previous prime is 664333001. The next prime is 664333037. The reversal of 664333011 is 110333466.

664333011 is a `hidden beast` number, since 6 + 643 + 3 + 3 + 0 + 11 = 666.

It is not a de Polignac number, because 664333011 - 2¹¹ = 664330963 is a prime.

It is a super-2 number, since 2×664333011² = 882676699008652242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664333001) 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 11 ways as a sum of consecutive naturals, for example, 45261 + ... + 58113.

Almost surely, 2^664333011 is an apocalyptic number.

664333011 is a deficient number, since it is larger than the sum of its proper divisors (295500877).

664333011 is a wasteful number, since it uses less digits than its factorization.

664333011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18602 (or 18599 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 664333011 is about 25774.6583100533. The cubic root of 664333011 is about 872.5599550484.

Adding to 664333011 its reverse (110333466), we get a palindrome (774666477).

The spelling of 664333011 in words is "six hundred sixty-four million, three hundred thirty-three thousand, eleven".