664710364705 has 16 divisors (see below), whose sum is σ = 800065808640. Its totient is φ = 530161365888.

The previous prime is 664710364691. The next prime is 664710364727. The reversal of 664710364705 is 507463017466.

664710364705 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 664710364705 - 2⁹ = 664710364193 is a prime.

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, 2568901 + ... + 2815789.

It is an arithmetic number, because the mean of its divisors is an integer number (50004113040).

Almost surely, 2^664710364705 is an apocalyptic number.

It is an amenable number.

664710364705 is a deficient number, since it is larger than the sum of its proper divisors (135355443935).

664710364705 is a wasteful number, since it uses less digits than its factorization.

664710364705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248520.

The product of its (nonzero) digits is 2540160, while the sum is 49.

The spelling of 664710364705 in words is "six hundred sixty-four billion, seven hundred ten million, three hundred sixty-four thousand, seven hundred five".