117687746 has 12 divisors (see below), whose sum is σ = 194039286. Its totient is φ = 53494320.

The previous prime is 117687737. The next prime is 117687751. The reversal of 117687746 is 647786711.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 117397225 + 290521 = 10835^2 + 539^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 117687746.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 242915 + ... + 243398.

Almost surely, 2^117687746 is an apocalyptic number.

117687746 is a deficient number, since it is larger than the sum of its proper divisors (76351540).

117687746 is a wasteful number, since it uses less digits than its factorization.

117687746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486337 (or 486326 counting only the distinct ones).

The product of its digits is 395136, while the sum is 47.

The square root of 117687746 is about 10848.3983149588. The cubic root of 117687746 is about 490.0537855717.

The spelling of 117687746 in words is "one hundred seventeen million, six hundred eighty-seven thousand, seven hundred forty-six".