2247245681 has 2 divisors, whose sum is σ = 2247245682. Its totient is φ = 2247245680.

The previous prime is 2247245677. The next prime is 2247245683. The reversal of 2247245681 is 1865427422.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2245243456 + 2002225 = 47384^2 + 1415^2 .

It is a cyclic number.

It is not a de Polignac number, because 2247245681 - 2² = 2247245677 is a prime.

It is a super-2 number, since 2×2247245681² = 10100226301546307522, which contains 22 as substring.

Together with 2247245683, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2247245683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1123622840 + 1123622841.

It is an arithmetic number, because the mean of its divisors is an integer number (1123622841).

Almost surely, 2^2247245681 is an apocalyptic number.

It is an amenable number.

2247245681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2247245681 is an equidigital number, since it uses as much as digits as its factorization.

2247245681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 215040, while the sum is 41.

The square root of 2247245681 is about 47405.1229404587. The cubic root of 2247245681 is about 1309.8357856043.

The spelling of 2247245681 in words is "two billion, two hundred forty-seven million, two hundred forty-five thousand, six hundred eighty-one".