664704025055 has 16 divisors (see below), whose sum is σ = 920991973440. Its totient is φ = 451098104832.

The previous prime is 664704025003. The next prime is 664704025109. The reversal of 664704025055 is 550520407466.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-664704025055 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 664704024997 and 664704025015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97891160 + ... + 97897949.

It is an arithmetic number, because the mean of its divisors is an integer number (57561998340).

Almost surely, 2^664704025055 is an apocalyptic number.

664704025055 is a deficient number, since it is larger than the sum of its proper divisors (256287948385).

664704025055 is a wasteful number, since it uses less digits than its factorization.

664704025055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195789218.

The product of its (nonzero) digits is 1008000, while the sum is 44.

The spelling of 664704025055 in words is "six hundred sixty-four billion, seven hundred four million, twenty-five thousand, fifty-five".