117618277 has 12 divisors (see below), whose sum is σ = 137701740. Its totient is φ = 100166976.

The previous prime is 117618233. The next prime is 117618283. The reversal of 117618277 is 772816711.

It can be written as a sum of positive squares in 2 ways, for example, as 53714241 + 63904036 = 7329^2 + 7994^2 .

It is a de Polignac number, because none of the positive numbers 2^k-117618277 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 (117618377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49 + ... + 15337.

It is an arithmetic number, because the mean of its divisors is an integer number (11475145).

Almost surely, 2^117618277 is an apocalyptic number.

It is an amenable number.

117618277 is a deficient number, since it is larger than the sum of its proper divisors (20083463).

117618277 is a wasteful number, since it uses less digits than its factorization.

117618277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15460 (or 15453 counting only the distinct ones).

The product of its digits is 32928, while the sum is 40.

The square root of 117618277 is about 10845.1960332674. The cubic root of 117618277 is about 489.9573432254.

The spelling of 117618277 in words is "one hundred seventeen million, six hundred eighteen thousand, two hundred seventy-seven".