117745761 has 32 divisors (see below), whose sum is σ = 183472128. Its totient is φ = 65782080.

The previous prime is 117745759. The next prime is 117745819. The reversal of 117745761 is 167547711.

It is not a de Polignac number, because 117745761 - 2¹ = 117745759 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (117740761) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 233836 + ... + 234338.

It is an arithmetic number, because the mean of its divisors is an integer number (5733504).

Almost surely, 2^117745761 is an apocalyptic number.

It is an amenable number.

117745761 is a deficient number, since it is larger than the sum of its proper divisors (65726367).

117745761 is a wasteful number, since it uses less digits than its factorization.

117745761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741.

The product of its digits is 41160, while the sum is 39.

The square root of 117745761 is about 10851.0718825377. The cubic root of 117745761 is about 490.1342974940.

The spelling of 117745761 in words is "one hundred seventeen million, seven hundred forty-five thousand, seven hundred sixty-one".