8280340669 has 2 divisors, whose sum is σ = 8280340670. Its totient is φ = 8280340668.

The previous prime is 8280340661. The next prime is 8280340687. The reversal of 8280340669 is 9660430828.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8034791769 + 245548900 = 89637^2 + 15670^2 .

It is a cyclic number.

It is not a de Polignac number, because 8280340669 - 2³ = 8280340661 is a prime.

It is a super-2 number, since 2×8280340669² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8280340661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4140170334 + 4140170335.

It is an arithmetic number, because the mean of its divisors is an integer number (4140170335).

Almost surely, 2^8280340669 is an apocalyptic number.

It is an amenable number.

8280340669 is a deficient number, since it is larger than the sum of its proper divisors (1).

8280340669 is an equidigital number, since it uses as much as digits as its factorization.

8280340669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 46.

The square root of 8280340669 is about 90996.3772300854. The cubic root of 8280340669 is about 2023.0940289277.

The spelling of 8280340669 in words is "eight billion, two hundred eighty million, three hundred forty thousand, six hundred sixty-nine".