117897 has 8 divisors (see below), whose sum is σ = 169344. Its totient is φ = 72528.

The previous prime is 117889. The next prime is 117899. The reversal of 117897 is 798711.

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

It is not a de Polignac number, because 117897 - 2³ = 117889 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (117899) 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, 1473 + ... + 1550.

It is an arithmetic number, because the mean of its divisors is an integer number (21168).

2¹¹⁷⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

117897 is a deficient number, since it is larger than the sum of its proper divisors (51447).

117897 is a wasteful number, since it uses less digits than its factorization.

117897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3039.

The product of its digits is 3528, while the sum is 33.

The square root of 117897 is about 343.3613257197. The cubic root of 117897 is about 49.0344059344.

It can be divided in two parts, 1178 and 97, that added together give a triangular number (1275 = T₅₀).

The spelling of 117897 in words is "one hundred seventeen thousand, eight hundred ninety-seven".