1317487 has 2 divisors, whose sum is σ = 1317488. Its totient is φ = 1317486.

The previous prime is 1317461. The next prime is 1317493. The reversal of 1317487 is 7847131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1317487 - 2⁷ = 1317359 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 (1317427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658743 + 658744.

It is an arithmetic number, because the mean of its divisors is an integer number (658744).

2^1317487 is an apocalyptic number.

1317487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317487 is an equidigital number, since it uses as much as digits as its factorization.

1317487 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1317487 is about 1147.8183654220. The cubic root of 1317487 is about 109.6264741044.

The spelling of 1317487 in words is "one million, three hundred seventeen thousand, four hundred eighty-seven".