1066240247 has 2 divisors, whose sum is σ = 1066240248. Its totient is φ = 1066240246.

The previous prime is 1066240193. The next prime is 1066240249. The reversal of 1066240247 is 7420426601.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1066240247 - 2⁶ = 1066240183 is a prime.

It is a super-2 number, since 2×1066240247² = 2273736528645242018, which contains 22 as substring.

Together with 1066240249, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1066240249) 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, 533120123 + 533120124.

It is an arithmetic number, because the mean of its divisors is an integer number (533120124).

Almost surely, 2^1066240247 is an apocalyptic number.

1066240247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1066240247 is an equidigital number, since it uses as much as digits as its factorization.

1066240247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 1066240247 is about 32653.3343932898. The cubic root of 1066240247 is about 1021.6097377887.

Adding to 1066240247 its reverse (7420426601), we get a palindrome (8486666848).

The spelling of 1066240247 in words is "one billion, sixty-six million, two hundred forty thousand, two hundred forty-seven".