1287067 has 2 divisors, whose sum is σ = 1287068. Its totient is φ = 1287066.

The previous prime is 1287061. The next prime is 1287071. The reversal of 1287067 is 7607821.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1287067 - 2³ = 1287059 is a prime.

It is not a weakly prime, because it can be changed into another prime (1287061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 643533 + 643534.

It is an arithmetic number, because the mean of its divisors is an integer number (643534).

2^1287067 is an apocalyptic number.

1287067 is a deficient number, since it is larger than the sum of its proper divisors (1).

1287067 is an equidigital number, since it uses as much as digits as its factorization.

1287067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 1287067 is about 1134.4897531490. The cubic root of 1287067 is about 108.7761587665.

The spelling of 1287067 in words is "one million, two hundred eighty-seven thousand, sixty-seven".