117888697 has 6 divisors (see below), whose sum is σ = 121162398. Its totient is φ = 114701184.

The previous prime is 117888679. The next prime is 117888703. The reversal of 117888697 is 796888711.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 23001616 + 94887081 = 4796^2 + 9741^2 .

It is a de Polignac number, because none of the positive numbers 2^k-117888697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117888647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41688 + ... + 44425.

It is an arithmetic number, because the mean of its divisors is an integer number (20193733).

Almost surely, 2^117888697 is an apocalyptic number.

It is an amenable number.

117888697 is a deficient number, since it is larger than the sum of its proper divisors (3273701).

117888697 is an frugal number, since it uses more digits than its factorization.

117888697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86187 (or 86150 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 55.

The square root of 117888697 is about 10857.6561467013. The cubic root of 117888697 is about 490.3325481029.

The spelling of 117888697 in words is "one hundred seventeen million, eight hundred eighty-eight thousand, six hundred ninety-seven".