117105487 has 4 divisors (see below), whose sum is σ = 117130320. Its totient is φ = 117080656.

The previous prime is 117105467. The next prime is 117105497. The reversal of 117105487 is 784501711.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 117105487 - 2¹¹ = 117103439 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 (117105437) 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, 2923 + ... + 15580.

It is an arithmetic number, because the mean of its divisors is an integer number (29282580).

Almost surely, 2^117105487 is an apocalyptic number.

117105487 is a deficient number, since it is larger than the sum of its proper divisors (24833).

117105487 is an equidigital number, since it uses as much as digits as its factorization.

117105487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24832.

The product of its (nonzero) digits is 7840, while the sum is 34.

The square root of 117105487 is about 10821.5288661076. The cubic root of 117105487 is about 489.2442702684.

The spelling of 117105487 in words is "one hundred seventeen million, one hundred five thousand, four hundred eighty-seven".