117220717 has 4 divisors (see below), whose sum is σ = 118429276. Its totient is φ = 116012160.

The previous prime is 117220687. The next prime is 117220739. The reversal of 117220717 is 717022711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35390601 + 81830116 = 5949^2 + 9046^2 .

It is a cyclic number.

It is not a de Polignac number, because 117220717 - 2¹⁹ = 116696429 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 (117220777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 604134 + ... + 604327.

It is an arithmetic number, because the mean of its divisors is an integer number (29607319).

Almost surely, 2^117220717 is an apocalyptic number.

It is an amenable number.

117220717 is a deficient number, since it is larger than the sum of its proper divisors (1208559).

117220717 is an equidigital number, since it uses as much as digits as its factorization.

117220717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1208558.

The product of its (nonzero) digits is 1372, while the sum is 28.

The square root of 117220717 is about 10826.8516661124. The cubic root of 117220717 is about 489.4046872790.

The spelling of 117220717 in words is "one hundred seventeen million, two hundred twenty thousand, seven hundred seventeen".