664330614205 has 32 divisors (see below), whose sum is σ = 827173785600. Its totient is φ = 511802945280.

The previous prime is 664330614169. The next prime is 664330614209. The reversal of 664330614205 is 502416033466.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-664330614205 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664330614209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6984427 + ... + 7078903.

It is an arithmetic number, because the mean of its divisors is an integer number (25849180800).

Almost surely, 2^664330614205 is an apocalyptic number.

It is an amenable number.

664330614205 is a deficient number, since it is larger than the sum of its proper divisors (162843171395).

664330614205 is a wasteful number, since it uses less digits than its factorization.

664330614205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94909.

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 664330614205 in words is "six hundred sixty-four billion, three hundred thirty million, six hundred fourteen thousand, two hundred five".