664670943514 has 8 divisors (see below), whose sum is σ = 1010664037620. Its totient is φ = 327782930976.

The previous prime is 664670943499. The next prime is 664670943523. The reversal of 664670943514 is 415349076466.

664670943514 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 661090955625 + 3579987889 = 813075^2 + 59833^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2276270209 + ... + 2276270500.

Almost surely, 2^664670943514 is an apocalyptic number.

664670943514 is a deficient number, since it is larger than the sum of its proper divisors (345993094106).

664670943514 is a wasteful number, since it uses less digits than its factorization.

664670943514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4552540784.

The product of its (nonzero) digits is 13063680, while the sum is 55.

The spelling of 664670943514 in words is "six hundred sixty-four billion, six hundred seventy million, nine hundred forty-three thousand, five hundred fourteen".