648585719 has 2 divisors, whose sum is σ = 648585720. Its totient is φ = 648585718.

The previous prime is 648585713. The next prime is 648585803. The reversal of 648585719 is 917585846.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 648585719 - 2⁴ = 648585703 is a prime.

It is a super-2 number, since 2×648585719² = 841326869781493922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (648585713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324292859 + 324292860.

It is an arithmetic number, because the mean of its divisors is an integer number (324292860).

Almost surely, 2^648585719 is an apocalyptic number.

648585719 is a deficient number, since it is larger than the sum of its proper divisors (1).

648585719 is an equidigital number, since it uses as much as digits as its factorization.

648585719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2419200, while the sum is 53.

The square root of 648585719 is about 25467.3461318607. The cubic root of 648585719 is about 865.6103898953.

The spelling of 648585719 in words is "six hundred forty-eight million, five hundred eighty-five thousand, seven hundred nineteen".