664045117 has 8 divisors (see below), whose sum is σ = 704026400. Its totient is φ = 624567024.

The previous prime is 664045099. The next prime is 664045133. The reversal of 664045117 is 711540466.

664045117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 664045117 - 2⁷ = 664044989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664045147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123078 + ... + 128359.

It is an arithmetic number, because the mean of its divisors is an integer number (88003300).

Almost surely, 2^664045117 is an apocalyptic number.

It is an amenable number.

664045117 is a deficient number, since it is larger than the sum of its proper divisors (39981283).

664045117 is a wasteful number, since it uses less digits than its factorization.

664045117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251595.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 664045117 is about 25769.0728781615. The cubic root of 664045117 is about 872.4338932353.

The spelling of 664045117 in words is "six hundred sixty-four million, forty-five thousand, one hundred seventeen".