117707887 has 4 divisors (see below), whose sum is σ = 128408616. Its totient is φ = 107007160.

The previous prime is 117707879. The next prime is 117707917. The reversal of 117707887 is 788707711.

It is a happy number.

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 117707887 - 2³ = 117707879 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 (117707287) 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, 5350348 + ... + 5350369.

It is an arithmetic number, because the mean of its divisors is an integer number (32102154).

Almost surely, 2^117707887 is an apocalyptic number.

117707887 is a deficient number, since it is larger than the sum of its proper divisors (10700729).

117707887 is a wasteful number, since it uses less digits than its factorization.

117707887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10700728.

The product of its (nonzero) digits is 153664, while the sum is 46.

The square root of 117707887 is about 10849.3265689627. The cubic root of 117707887 is about 490.0817397998.

The spelling of 117707887 in words is "one hundred seventeen million, seven hundred seven thousand, eight hundred eighty-seven".