7270747681 has 2 divisors, whose sum is σ = 7270747682. Its totient is φ = 7270747680.

The previous prime is 7270747621. The next prime is 7270747709. The reversal of 7270747681 is 1867470727.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6829369600 + 441378081 = 82640^2 + 21009^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7270747681 is a prime.

It is a super-2 number, since 2×7270747681² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7270747621) 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, 3635373840 + 3635373841.

It is an arithmetic number, because the mean of its divisors is an integer number (3635373841).

Almost surely, 2^7270747681 is an apocalyptic number.

It is an amenable number.

7270747681 is a deficient number, since it is larger than the sum of its proper divisors (1).

7270747681 is an equidigital number, since it uses as much as digits as its factorization.

7270747681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 921984, while the sum is 49.

The square root of 7270747681 is about 85268.6793670454. The cubic root of 7270747681 is about 1937.2828082367.

The spelling of 7270747681 in words is "seven billion, two hundred seventy million, seven hundred forty-seven thousand, six hundred eighty-one".