487649 has 2 divisors, whose sum is σ = 487650. Its totient is φ = 487648.

The previous prime is 487637. The next prime is 487651. The reversal of 487649 is 946784.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 483025 + 4624 = 695^2 + 68^2 .

It is a cyclic number.

It is not a de Polignac number, because 487649 - 2¹⁶ = 422113 is a prime.

Together with 487651, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (487049) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243824 + 243825.

It is an arithmetic number, because the mean of its divisors is an integer number (243825).

2⁴⁸⁷⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

487649 is a deficient number, since it is larger than the sum of its proper divisors (1).

487649 is an equidigital number, since it uses as much as digits as its factorization.

487649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 38.

The square root of 487649 is about 698.3186951529. The cubic root of 487649 is about 78.7110633080.

The spelling of 487649 in words is "four hundred eighty-seven thousand, six hundred forty-nine".