133717506 has 16 divisors (see below), whose sum is σ = 288007104. Its totient is φ = 41143824.

The previous prime is 133717501. The next prime is 133717513. The reversal of 133717506 is 605717331.

It is not an unprimeable number, because it can be changed into a prime (133717501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 857086 + ... + 857241.

It is an arithmetic number, because the mean of its divisors is an integer number (18000444).

Almost surely, 2^133717506 is an apocalyptic number.

133717506 is an abundant number, since it is smaller than the sum of its proper divisors (154289598).

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

133717506 is a wasteful number, since it uses less digits than its factorization.

133717506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714345.

The product of its (nonzero) digits is 13230, while the sum is 33.

The square root of 133717506 is about 11563.6285827590. The cubic root of 133717506 is about 511.3631430015.

The spelling of 133717506 in words is "one hundred thirty-three million, seven hundred seventeen thousand, five hundred six".