664013133 has 40 divisors (see below), whose sum is σ = 1157789952. Its totient is φ = 371348064.

The previous prime is 664013099. The next prime is 664013153. The reversal of 664013133 is 331310466.

664013133 is a `hidden beast` number, since 6 + 640 + 1 + 3 + 13 + 3 = 666.

It is not a de Polignac number, because 664013133 - 2¹⁰ = 664012109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 664013097 and 664013106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664013153) 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 39 ways as a sum of consecutive naturals, for example, 14191 + ... + 39107.

Almost surely, 2^664013133 is an apocalyptic number.

664013133 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

664013133 is a deficient number, since it is larger than the sum of its proper divisors (493776819).

664013133 is a wasteful number, since it uses less digits than its factorization.

664013133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24983 (or 24974 counting only the distinct ones).

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

The square root of 664013133 is about 25768.4522818116. The cubic root of 664013133 is about 872.4198859673.

Adding to 664013133 its reverse (331310466), we get a palindrome (995323599).

The spelling of 664013133 in words is "six hundred sixty-four million, thirteen thousand, one hundred thirty-three".