201717117 has 24 divisors (see below), whose sum is σ = 333889920. Its totient is φ = 114956640.

The previous prime is 201717097. The next prime is 201717143. The reversal of 201717117 is 711717102.

It is not a de Polignac number, because 201717117 - 2¹⁶ = 201651581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201717017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20392 + ... + 28622.

It is an arithmetic number, because the mean of its divisors is an integer number (13912080).

Almost surely, 2^201717117 is an apocalyptic number.

It is an amenable number.

201717117 is a deficient number, since it is larger than the sum of its proper divisors (132172803).

201717117 is a wasteful number, since it uses less digits than its factorization.

201717117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8633 (or 8630 counting only the distinct ones).

The product of its (nonzero) digits is 686, while the sum is 27.

The square root of 201717117 is about 14202.7151277493. The cubic root of 201717117 is about 586.4724075253.

The spelling of 201717117 in words is "two hundred one million, seven hundred seventeen thousand, one hundred seventeen".