7266940657 has 2 divisors, whose sum is σ = 7266940658. Its totient is φ = 7266940656.

The previous prime is 7266940613. The next prime is 7266940661. The reversal of 7266940657 is 7560496627.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7173412416 + 93528241 = 84696^2 + 9671^2 .

It is an emirp because it is prime and its reverse (7560496627) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7266940657 is a prime.

It is not a weakly prime, because it can be changed into another prime (7266940957) 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, 3633470328 + 3633470329.

It is an arithmetic number, because the mean of its divisors is an integer number (3633470329).

Almost surely, 2^7266940657 is an apocalyptic number.

It is an amenable number.

7266940657 is a deficient number, since it is larger than the sum of its proper divisors (1).

7266940657 is an equidigital number, since it uses as much as digits as its factorization.

7266940657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3810240, while the sum is 52.

The square root of 7266940657 is about 85246.3527489593. The cubic root of 7266940657 is about 1936.9446234035.

The spelling of 7266940657 in words is "seven billion, two hundred sixty-six million, nine hundred forty thousand, six hundred fifty-seven".