1288367 has 2 divisors, whose sum is σ = 1288368. Its totient is φ = 1288366.

The previous prime is 1288363. The next prime is 1288393. The reversal of 1288367 is 7638821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1288367 - 2² = 1288363 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1288361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644183 + 644184.

It is an arithmetic number, because the mean of its divisors is an integer number (644184).

2^1288367 is an apocalyptic number.

1288367 is a deficient number, since it is larger than the sum of its proper divisors (1).

1288367 is an equidigital number, since it uses as much as digits as its factorization.

1288367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 35.

The square root of 1288367 is about 1135.0625533423. The cubic root of 1288367 is about 108.8127695058.

The spelling of 1288367 in words is "one million, two hundred eighty-eight thousand, three hundred sixty-seven".