133717087 has 16 divisors (see below), whose sum is σ = 162153792. Its totient is φ = 107642880.

The previous prime is 133717061. The next prime is 133717097. The reversal of 133717087 is 780717331.

It is a cyclic number.

It is not a de Polignac number, because 133717087 - 2¹¹ = 133715039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133717007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75403 + ... + 77155.

It is an arithmetic number, because the mean of its divisors is an integer number (10134612).

Almost surely, 2^133717087 is an apocalyptic number.

133717087 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

133717087 is a deficient number, since it is larger than the sum of its proper divisors (28436705).

133717087 is a wasteful number, since it uses less digits than its factorization.

133717087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2418.

The product of its (nonzero) digits is 24696, while the sum is 37.

The square root of 133717087 is about 11563.6104655942. The cubic root of 133717087 is about 511.3626088869.

The spelling of 133717087 in words is "one hundred thirty-three million, seven hundred seventeen thousand, eighty-seven".