133509706 has 12 divisors (see below), whose sum is σ = 220125906. Its totient is φ = 60686120.

The previous prime is 133509689. The next prime is 133509709. The reversal of 133509706 is 607905331.

It can be written as a sum of positive squares in only one way, i.e., 125641681 + 7868025 = 11209^2 + 2805^2 .

It is not an unprimeable number, because it can be changed into a prime (133509709) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 275605 + ... + 276088.

Almost surely, 2^133509706 is an apocalyptic number.

133509706 is a deficient number, since it is larger than the sum of its proper divisors (86616200).

133509706 is a wasteful number, since it uses less digits than its factorization.

133509706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551717 (or 551706 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 34.

The square root of 133509706 is about 11554.6400203555. The cubic root of 133509706 is about 511.0981157411.

The spelling of 133509706 in words is "one hundred thirty-three million, five hundred nine thousand, seven hundred six".