664860354583 has 2 divisors, whose sum is σ = 664860354584. Its totient is φ = 664860354582.

The previous prime is 664860354581. The next prime is 664860354679. The reversal of 664860354583 is 385453068466.

664860354583 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 664860354583 - 2¹ = 664860354581 is a prime.

Together with 664860354581, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (664860354581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332430177291 + 332430177292.

It is an arithmetic number, because the mean of its divisors is an integer number (332430177292).

Almost surely, 2^664860354583 is an apocalyptic number.

664860354583 is a deficient number, since it is larger than the sum of its proper divisors (1).

664860354583 is an equidigital number, since it uses as much as digits as its factorization.

664860354583 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49766400, while the sum is 58.

The spelling of 664860354583 in words is "six hundred sixty-four billion, eight hundred sixty million, three hundred fifty-four thousand, five hundred eighty-three".