1487897 has 4 divisors (see below), whose sum is σ = 1492260. Its totient is φ = 1483536.

The previous prime is 1487887. The next prime is 1487917. The reversal of 1487897 is 7987841.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 755161 + 732736 = 869^2 + 856^2 .

It is a cyclic number.

It is not a de Polignac number, because 1487897 - 2⁸ = 1487641 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1487867) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1622 + ... + 2367.

It is an arithmetic number, because the mean of its divisors is an integer number (373065).

2^1487897 is an apocalyptic number.

It is an amenable number.

1487897 is a deficient number, since it is larger than the sum of its proper divisors (4363).

1487897 is an equidigital number, since it uses as much as digits as its factorization.

1487897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4362.

The product of its digits is 112896, while the sum is 44.

The square root of 1487897 is about 1219.7938350393. The cubic root of 1487897 is about 114.1627152154.

The spelling of 1487897 in words is "one million, four hundred eighty-seven thousand, eight hundred ninety-seven".