1284288667 has 2 divisors, whose sum is σ = 1284288668. Its totient is φ = 1284288666.

The previous prime is 1284288661. The next prime is 1284288671. The reversal of 1284288667 is 7668824821.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1284288667 - 2³ = 1284288659 is a prime.

It is not a weakly prime, because it can be changed into another prime (1284288661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 642144333 + 642144334.

It is an arithmetic number, because the mean of its divisors is an integer number (642144334).

Almost surely, 2^1284288667 is an apocalyptic number.

1284288667 is a deficient number, since it is larger than the sum of its proper divisors (1).

1284288667 is an equidigital number, since it uses as much as digits as its factorization.

1284288667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2064384, while the sum is 52.

The square root of 1284288667 is about 35836.9734631707. The cubic root of 1284288667 is about 1086.9783233051.

The spelling of 1284288667 in words is "one billion, two hundred eighty-four million, two hundred eighty-eight thousand, six hundred sixty-seven".