647587 has 2 divisors, whose sum is σ = 647588. Its totient is φ = 647586.

The previous prime is 647579. The next prime is 647593. The reversal of 647587 is 785746.

It is a happy number.

647587 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 647587 - 2³ = 647579 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (647527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323793 + 323794.

It is an arithmetic number, because the mean of its divisors is an integer number (323794).

2⁶⁴⁷⁵⁸⁷ is an apocalyptic number.

647587 is a deficient number, since it is larger than the sum of its proper divisors (1).

647587 is an equidigital number, since it uses as much as digits as its factorization.

647587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 47040, while the sum is 37.

The square root of 647587 is about 804.7279043254. The cubic root of 647587 is about 86.5165860807.

The spelling of 647587 in words is "six hundred forty-seven thousand, five hundred eighty-seven".