133005605 has 16 divisors (see below), whose sum is σ = 169905600. Its totient is φ = 99665280.

The previous prime is 133005581. The next prime is 133005611. The reversal of 133005605 is 506500331.

It is not a de Polignac number, because 133005605 - 2⁶ = 133005541 is a prime.

It is a super-2 number, since 2×133005605² = 35380981922832050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 590 + ... + 16320.

It is an arithmetic number, because the mean of its divisors is an integer number (10619100).

Almost surely, 2^133005605 is an apocalyptic number.

It is an amenable number.

133005605 is a deficient number, since it is larger than the sum of its proper divisors (36899995).

133005605 is a wasteful number, since it uses less digits than its factorization.

133005605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15844.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 133005605 is about 11532.8055996796. The cubic root of 133005605 is about 510.4540426626.

Adding to 133005605 its reverse (506500331), we get a palindrome (639505936).

The spelling of 133005605 in words is "one hundred thirty-three million, five thousand, six hundred five".