133564374 has 12 divisors (see below), whose sum is σ = 289389516. Its totient is φ = 44521452.

The previous prime is 133564367. The next prime is 133564391. The reversal of 133564374 is 473465331.

133564374 is a `hidden beast` number, since 1 + 3 + 3 + 5 + 643 + 7 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 3710104 + ... + 3710139.

It is an arithmetic number, because the mean of its divisors is an integer number (24115793).

Almost surely, 2^133564374 is an apocalyptic number.

133564374 is an abundant number, since it is smaller than the sum of its proper divisors (155825142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133564374 is a wasteful number, since it uses less digits than its factorization.

133564374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7420251 (or 7420248 counting only the distinct ones).

The product of its digits is 90720, while the sum is 36.

The square root of 133564374 is about 11557.0054079766. The cubic root of 133564374 is about 511.1678657238.

The spelling of 133564374 in words is "one hundred thirty-three million, five hundred sixty-four thousand, three hundred seventy-four".