117780017 has 2 divisors, whose sum is σ = 117780018. Its totient is φ = 117780016.

The previous prime is 117780011. The next prime is 117780023. The reversal of 117780017 is 710087711.

It is a balanced prime because it is at equal distance from previous prime (117780011) and next prime (117780023).

It can be written as a sum of positive squares in only one way, i.e., 104060401 + 13719616 = 10201^2 + 3704^2 .

It is an emirp because it is prime and its reverse (710087711) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 117780017 - 2⁶ = 117779953 is a prime.

It is not a weakly prime, because it can be changed into another prime (117780011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58890008 + 58890009.

It is an arithmetic number, because the mean of its divisors is an integer number (58890009).

Almost surely, 2^117780017 is an apocalyptic number.

It is an amenable number.

117780017 is a deficient number, since it is larger than the sum of its proper divisors (1).

117780017 is an equidigital number, since it uses as much as digits as its factorization.

117780017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2744, while the sum is 32.

The square root of 117780017 is about 10852.6502293219. The cubic root of 117780017 is about 490.1818247889.

The spelling of 117780017 in words is "one hundred seventeen million, seven hundred eighty thousand, seventeen".