664795 has 8 divisors (see below), whose sum is σ = 823680. Its totient is φ = 514560.

The previous prime is 664793. The next prime is 664799. The reversal of 664795 is 597466.

664795 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 not a de Polignac number, because 664795 - 2¹ = 664793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (664793) 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, 1990 + ... + 2299.

It is an arithmetic number, because the mean of its divisors is an integer number (102960).

2⁶⁶⁴⁷⁹⁵ is an apocalyptic number.

664795 is a deficient number, since it is larger than the sum of its proper divisors (158885).

664795 is a wasteful number, since it uses less digits than its factorization.

664795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4325.

The product of its digits is 45360, while the sum is 37.

The square root of 664795 is about 815.3496182620. The cubic root of 664795 is about 87.2762172755.

The spelling of 664795 in words is "six hundred sixty-four thousand, seven hundred ninety-five".