133366564 has 36 divisors (see below), whose sum is σ = 253788304. Its totient is φ = 61278336.

The previous prime is 133366553. The next prime is 133366579. The reversal of 133366564 is 465663331.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 48367 + ... + 51049.

Almost surely, 2^133366564 is an apocalyptic number.

It is an amenable number.

133366564 is a deficient number, since it is larger than the sum of its proper divisors (120421740).

133366564 is a wasteful number, since it uses less digits than its factorization.

133366564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2764 (or 2745 counting only the distinct ones).

The product of its digits is 116640, while the sum is 37.

The square root of 133366564 is about 11548.4442242235. Note that the first 3 decimals coincide. The cubic root of 133366564 is about 510.9153930258.

It can be divided in two parts, 13336 and 6564, that added together give a triangular number (19900 = T₁₉₉).

The spelling of 133366564 in words is "one hundred thirty-three million, three hundred sixty-six thousand, five hundred sixty-four".