664164613 has 8 divisors (see below), whose sum is σ = 768654080. Its totient is φ = 562077360.

The previous prime is 664164607. The next prime is 664164623. The reversal of 664164613 is 316461466.

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 664164613 - 2⁵ = 664164581 is a prime.

It is a super-2 number, since 2×664164613² = 882229266322879538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664164623) 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, 599958 + ... + 601063.

It is an arithmetic number, because the mean of its divisors is an integer number (96081760).

Almost surely, 2^664164613 is an apocalyptic number.

It is an amenable number.

664164613 is a deficient number, since it is larger than the sum of its proper divisors (104489467).

664164613 is a wasteful number, since it uses less digits than its factorization.

664164613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201107.

The product of its digits is 62208, while the sum is 37.

The square root of 664164613 is about 25771.3913671730. The cubic root of 664164613 is about 872.4862220630.

The spelling of 664164613 in words is "six hundred sixty-four million, one hundred sixty-four thousand, six hundred thirteen".