2708289257 has 2 divisors, whose sum is σ = 2708289258. Its totient is φ = 2708289256.

The previous prime is 2708289197. The next prime is 2708289263. The reversal of 2708289257 is 7529828072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2605489936 + 102799321 = 51044^2 + 10139^2 .

It is a cyclic number.

It is not a de Polignac number, because 2708289257 - 2¹² = 2708285161 is a prime.

It is a super-2 number, since 2×2708289257² = 14669661399163224098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2708285257) 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 as a sum of consecutive naturals, namely, 1354144628 + 1354144629.

It is an arithmetic number, because the mean of its divisors is an integer number (1354144629).

Almost surely, 2^2708289257 is an apocalyptic number.

It is an amenable number.

2708289257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2708289257 is an equidigital number, since it uses as much as digits as its factorization.

2708289257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1128960, while the sum is 50.

The square root of 2708289257 is about 52041.2265132174. The cubic root of 2708289257 is about 1393.9002062116.

The spelling of 2708289257 in words is "two billion, seven hundred eight million, two hundred eighty-nine thousand, two hundred fifty-seven".