1297487 has 2 divisors, whose sum is σ = 1297488. Its totient is φ = 1297486.

The previous prime is 1297477. The next prime is 1297501. The reversal of 1297487 is 7847921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1297487 - 2¹⁸ = 1035343 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1297487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1297447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648743 + 648744.

It is an arithmetic number, because the mean of its divisors is an integer number (648744).

2^1297487 is an apocalyptic number.

1297487 is a deficient number, since it is larger than the sum of its proper divisors (1).

1297487 is an equidigital number, since it uses as much as digits as its factorization.

1297487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 38.

The square root of 1297487 is about 1139.0728686085. The cubic root of 1297487 is about 109.0689180630.

The spelling of 1297487 in words is "one million, two hundred ninety-seven thousand, four hundred eighty-seven".