7266556601 has 2 divisors, whose sum is σ = 7266556602. Its totient is φ = 7266556600.

The previous prime is 7266556597. The next prime is 7266556667. The reversal of 7266556601 is 1066556627.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7089640000 + 176916601 = 84200^2 + 13301^2 .

It is an emirp because it is prime and its reverse (1066556627) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7266556601 - 2² = 7266556597 is a prime.

It is not a weakly prime, because it can be changed into another prime (7266555601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3633278300 + 3633278301.

It is an arithmetic number, because the mean of its divisors is an integer number (3633278301).

Almost surely, 2^7266556601 is an apocalyptic number.

It is an amenable number.

7266556601 is a deficient number, since it is larger than the sum of its proper divisors (1).

7266556601 is an equidigital number, since it uses as much as digits as its factorization.

7266556601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 44.

The square root of 7266556601 is about 85244.1000949626. The cubic root of 7266556601 is about 1936.9105004558.

The spelling of 7266556601 in words is "seven billion, two hundred sixty-six million, five hundred fifty-six thousand, six hundred one".