664808076470 has 64 divisors (see below), whose sum is σ = 1251195180480. Its totient is φ = 254001979392.

The previous prime is 664808076461. The next prime is 664808076509. The reversal of 664808076470 is 74670808466.

664808076470 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134655842 + ... + 134660778.

It is an arithmetic number, because the mean of its divisors is an integer number (19549924695).

Almost surely, 2^664808076470 is an apocalyptic number.

664808076470 is a deficient number, since it is larger than the sum of its proper divisors (586387104010).

664808076470 is a wasteful number, since it uses less digits than its factorization.

664808076470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9857.

The product of its (nonzero) digits is 10838016, while the sum is 56.

The spelling of 664808076470 in words is "six hundred sixty-four billion, eight hundred eight million, seventy-six thousand, four hundred seventy".