117487 has 4 divisors (see below), whose sum is σ = 124416. Its totient is φ = 110560.

The previous prime is 117443. The next prime is 117497. The reversal of 117487 is 784711.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784711 = 29 ⋅27059.

It is a cyclic number.

It is not a de Polignac number, because 117487 - 2¹⁵ = 84719 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 (117427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3439 + ... + 3472.

It is an arithmetic number, because the mean of its divisors is an integer number (31104).

2¹¹⁷⁴⁸⁷ is an apocalyptic number.

117487 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

117487 is a deficient number, since it is larger than the sum of its proper divisors (6929).

117487 is an equidigital number, since it uses as much as digits as its factorization.

117487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6928.

The product of its digits is 1568, while the sum is 28.

The square root of 117487 is about 342.7637670466. The cubic root of 117487 is about 48.9774990402.

The spelling of 117487 in words is "one hundred seventeen thousand, four hundred eighty-seven".