2179072717 has 2 divisors, whose sum is σ = 2179072718. Its totient is φ = 2179072716.

The previous prime is 2179072681. The next prime is 2179072747. The reversal of 2179072717 is 7172709712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1299890916 + 879181801 = 36054^2 + 29651^2 .

It is a cyclic number.

It is not a de Polignac number, because 2179072717 - 2¹⁹ = 2178548429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2179072747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1089536358 + 1089536359.

It is an arithmetic number, because the mean of its divisors is an integer number (1089536359).

Almost surely, 2^2179072717 is an apocalyptic number.

It is an amenable number.

2179072717 is a deficient number, since it is larger than the sum of its proper divisors (1).

2179072717 is an equidigital number, since it uses as much as digits as its factorization.

2179072717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86436, while the sum is 43.

The square root of 2179072717 is about 46680.5389536153. The cubic root of 2179072717 is about 1296.4543852417.

The spelling of 2179072717 in words is "two billion, one hundred seventy-nine million, seventy-two thousand, seven hundred seventeen".