1487997 has 16 divisors (see below), whose sum is σ = 2519680. Its totient is φ = 850176.

The previous prime is 1487989. The next prime is 1488007. The reversal of 1487997 is 7997841.

It is not a de Polignac number, because 1487997 - 2³ = 1487989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1487917) 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 in 15 ways as a sum of consecutive naturals, for example, 3748 + ... + 4125.

It is an arithmetic number, because the mean of its divisors is an integer number (157480).

2^1487997 is an apocalyptic number.

It is an amenable number.

1487997 is a deficient number, since it is larger than the sum of its proper divisors (1031683).

1487997 is an equidigital number, since it uses as much as digits as its factorization.

1487997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7889 (or 7883 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 1487997 is about 1219.8348248841. The cubic root of 1487997 is about 114.1652727436.

The spelling of 1487997 in words is "one million, four hundred eighty-seven thousand, nine hundred ninety-seven".