1487797 has 2 divisors, whose sum is σ = 1487798. Its totient is φ = 1487796.

The previous prime is 1487779. The next prime is 1487809. The reversal of 1487797 is 7977841.

Together with previous prime (1487779) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1347921 + 139876 = 1161^2 + 374^2 .

It is an emirp because it is prime and its reverse (7977841) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1487797 - 2¹⁵ = 1455029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1487777) 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, 743898 + 743899.

It is an arithmetic number, because the mean of its divisors is an integer number (743899).

2^1487797 is an apocalyptic number.

It is an amenable number.

1487797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1487797 is an equidigital number, since it uses as much as digits as its factorization.

1487797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 98784, while the sum is 43.

The square root of 1487797 is about 1219.7528438171. The cubic root of 1487797 is about 114.1601575726.

The spelling of 1487797 in words is "one million, four hundred eighty-seven thousand, seven hundred ninety-seven".