133664067 has 8 divisors (see below), whose sum is σ = 198020880. Its totient is φ = 89109360.

The previous prime is 133664057. The next prime is 133664093. The reversal of 133664067 is 760466331.

It is a happy number.

133664067 is a `hidden beast` number, since 1 + 3 + 3 + 6 + 640 + 6 + 7 = 666.

It is not a de Polignac number, because 133664067 - 2⁴ = 133664051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133664057) 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 7 ways as a sum of consecutive naturals, for example, 2475234 + ... + 2475287.

It is an arithmetic number, because the mean of its divisors is an integer number (24752610).

Almost surely, 2^133664067 is an apocalyptic number.

133664067 is a deficient number, since it is larger than the sum of its proper divisors (64356813).

133664067 is an equidigital number, since it uses as much as digits as its factorization.

133664067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4950530 (or 4950524 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 36.

The square root of 133664067 is about 11561.3177017155. The cubic root of 133664067 is about 511.2950133628.

The spelling of 133664067 in words is "one hundred thirty-three million, six hundred sixty-four thousand, sixty-seven".