133791065 has 16 divisors (see below), whose sum is σ = 174830400. Its totient is φ = 97900992.

The previous prime is 133791059. The next prime is 133791079. The reversal of 133791065 is 560197331.

It is a cyclic number.

It is not a de Polignac number, because 133791065 - 2⁸ = 133790809 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21527 + ... + 27036.

It is an arithmetic number, because the mean of its divisors is an integer number (10926900).

Almost surely, 2^133791065 is an apocalyptic number.

It is an amenable number.

133791065 is a deficient number, since it is larger than the sum of its proper divisors (41039335).

133791065 is a wasteful number, since it uses less digits than its factorization.

133791065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48616.

The product of its (nonzero) digits is 17010, while the sum is 35.

The square root of 133791065 is about 11566.8087647371. The cubic root of 133791065 is about 511.4568940422.

The spelling of 133791065 in words is "one hundred thirty-three million, seven hundred ninety-one thousand, sixty-five".