2568478417 has 2 divisors, whose sum is σ = 2568478418. Its totient is φ = 2568478416.

The previous prime is 2568478399. The next prime is 2568478453. The reversal of 2568478417 is 7148748652.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2039064336 + 529414081 = 45156^2 + 23009^2 .

It is a cyclic number.

It is not a de Polignac number, because 2568478417 - 2¹¹ = 2568476369 is a prime.

It is a super-3 number, since 3×2568478417³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2568478477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1284239208 + 1284239209.

It is an arithmetic number, because the mean of its divisors is an integer number (1284239209).

Almost surely, 2^2568478417 is an apocalyptic number.

It is an amenable number.

2568478417 is a deficient number, since it is larger than the sum of its proper divisors (1).

2568478417 is an equidigital number, since it uses as much as digits as its factorization.

2568478417 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3010560, while the sum is 52.

The square root of 2568478417 is about 50680.1580206692. The cubic root of 2568478417 is about 1369.4892899895.

The spelling of 2568478417 in words is "two billion, five hundred sixty-eight million, four hundred seventy-eight thousand, four hundred seventeen".