664584719 has 2 divisors, whose sum is σ = 664584720. Its totient is φ = 664584718.

The previous prime is 664584659. The next prime is 664584731. The reversal of 664584719 is 917485466.

664584719 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 a de Polignac number, because none of the positive numbers 2^k-664584719 is a prime.

It is a super-2 number, since 2×664584719² = 883345697456617922, 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 (664584769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332292359 + 332292360.

It is an arithmetic number, because the mean of its divisors is an integer number (332292360).

Almost surely, 2^664584719 is an apocalyptic number.

664584719 is a deficient number, since it is larger than the sum of its proper divisors (1).

664584719 is an equidigital number, since it uses as much as digits as its factorization.

664584719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1451520, while the sum is 50.

The square root of 664584719 is about 25779.5407057612. The cubic root of 664584719 is about 872.6701420504.

The spelling of 664584719 in words is "six hundred sixty-four million, five hundred eighty-four thousand, seven hundred nineteen".