2256866347 has 2 divisors, whose sum is σ = 2256866348. Its totient is φ = 2256866346.

The previous prime is 2256866323. The next prime is 2256866441. The reversal of 2256866347 is 7436686522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2256866347 - 2¹⁹ = 2256342059 is a prime.

It is a super-2 number, since 2×2256866347² = 10186891416442248818, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2256866347.

It is not a weakly prime, because it can be changed into another prime (2256866747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1128433173 + 1128433174.

It is an arithmetic number, because the mean of its divisors is an integer number (1128433174).

Almost surely, 2^2256866347 is an apocalyptic number.

2256866347 is a deficient number, since it is larger than the sum of its proper divisors (1).

2256866347 is an equidigital number, since it uses as much as digits as its factorization.

2256866347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 49.

The square root of 2256866347 is about 47506.4874201408. The cubic root of 2256866347 is about 1311.7023004889.

The spelling of 2256866347 in words is "two billion, two hundred fifty-six million, eight hundred sixty-six thousand, three hundred forty-seven".