117166487 has 4 divisors (see below), whose sum is σ = 117942576. Its totient is φ = 116390400.

The previous prime is 117166481. The next prime is 117166501. The reversal of 117166487 is 784661711.

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 117166487 - 2¹⁸ = 116904343 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 (117166481) 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, 387818 + ... + 388119.

It is an arithmetic number, because the mean of its divisors is an integer number (29485644).

Almost surely, 2^117166487 is an apocalyptic number.

117166487 is a deficient number, since it is larger than the sum of its proper divisors (776089).

117166487 is an equidigital number, since it uses as much as digits as its factorization.

117166487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776088.

The product of its digits is 56448, while the sum is 41.

The square root of 117166487 is about 10824.3469548976. The cubic root of 117166487 is about 489.3292042906.

The spelling of 117166487 in words is "one hundred seventeen million, one hundred sixty-six thousand, four hundred eighty-seven".