8266707497 has 2 divisors, whose sum is σ = 8266707498. Its totient is φ = 8266707496.

The previous prime is 8266707479. The next prime is 8266707517. The reversal of 8266707497 is 7947076628.

Together with previous prime (8266707479) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5395783936 + 2870923561 = 73456^2 + 53581^2 .

It is a cyclic number.

It is not a de Polignac number, because 8266707497 - 2²⁶ = 8199598633 is a prime.

It is not a weakly prime, because it can be changed into another prime (8266707437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4133353748 + 4133353749.

It is an arithmetic number, because the mean of its divisors is an integer number (4133353749).

Almost surely, 2^8266707497 is an apocalyptic number.

It is an amenable number.

8266707497 is a deficient number, since it is larger than the sum of its proper divisors (1).

8266707497 is an equidigital number, since it uses as much as digits as its factorization.

8266707497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7112448, while the sum is 56.

The square root of 8266707497 is about 90921.4358498589. The cubic root of 8266707497 is about 2021.9831108768.

The spelling of 8266707497 in words is "eight billion, two hundred sixty-six million, seven hundred seven thousand, four hundred ninety-seven".