1287007 has 2 divisors, whose sum is σ = 1287008. Its totient is φ = 1287006.

The previous prime is 1286983. The next prime is 1287047. The reversal of 1287007 is 7007821.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1287007 is a prime.

It is an Ulam number.

1287007 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1287047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643503 + 643504.

It is an arithmetic number, because the mean of its divisors is an integer number (643504).

2^1287007 is an apocalyptic number.

1287007 is a deficient number, since it is larger than the sum of its proper divisors (1).

1287007 is an equidigital number, since it uses as much as digits as its factorization.

1287007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 1287007 is about 1134.4633092348. The cubic root of 1287007 is about 108.7744684450.

The spelling of 1287007 in words is "one million, two hundred eighty-seven thousand, seven".