664347935 has 8 divisors (see below), whose sum is σ = 803037456. Its totient is φ = 527598400.

The previous prime is 664347917. The next prime is 664347941. The reversal of 664347935 is 539743466.

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

It is not a de Polignac number, because 664347935 - 2¹⁰ = 664346911 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 664347935.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 484241 + ... + 485610.

It is an arithmetic number, because the mean of its divisors is an integer number (100379682).

Almost surely, 2^664347935 is an apocalyptic number.

664347935 is a deficient number, since it is larger than the sum of its proper divisors (138689521).

664347935 is a wasteful number, since it uses less digits than its factorization.

664347935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969993.

The product of its digits is 1632960, while the sum is 47.

The square root of 664347935 is about 25774.9478175999. The cubic root of 664347935 is about 872.5664889137.

The spelling of 664347935 in words is "six hundred sixty-four million, three hundred forty-seven thousand, nine hundred thirty-five".