133845605 has 8 divisors (see below), whose sum is σ = 160699032. Its totient is φ = 107020288.

The previous prime is 133845599. The next prime is 133845629. The reversal of 133845605 is 506548331.

It can be written as a sum of positive squares in 4 ways, for example, as 48874081 + 84971524 = 6991^2 + 9218^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133845605 - 2¹² = 133841509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5477 + ... + 17253.

It is an arithmetic number, because the mean of its divisors is an integer number (20087379).

Almost surely, 2^133845605 is an apocalyptic number.

It is an amenable number.

133845605 is a deficient number, since it is larger than the sum of its proper divisors (26853427).

133845605 is a wasteful number, since it uses less digits than its factorization.

133845605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14055.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 133845605 is about 11569.1661324401. The cubic root of 133845605 is about 511.5263831604.

The spelling of 133845605 in words is "one hundred thirty-three million, eight hundred forty-five thousand, six hundred five".