117665748 has 18 divisors (see below), whose sum is σ = 297432954. Its totient is φ = 39221904.

The previous prime is 117665719. The next prime is 117665749. The reversal of 117665748 is 847566711.

117665748 is a `hidden beast` number, since 1 + 1 + 76 + 6 + 574 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 106254864 + 11410884 = 10308^2 + 3378^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117665749) 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, 1634211 + ... + 1634282.

It is an arithmetic number, because the mean of its divisors is an integer number (16524053).

Almost surely, 2^117665748 is an apocalyptic number.

117665748 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

117665748 is an abundant number, since it is smaller than the sum of its proper divisors (179767206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

117665748 is a wasteful number, since it uses less digits than its factorization.

117665748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3268503 (or 3268498 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 117665748 is about 10847.3843851871. The cubic root of 117665748 is about 490.0232503198.

The spelling of 117665748 in words is "one hundred seventeen million, six hundred sixty-five thousand, seven hundred forty-eight".