664017 has 8 divisors (see below), whose sum is σ = 890400. Its totient is φ = 440160.

The previous prime is 664009. The next prime is 664019. The reversal of 664017 is 710466.

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

It is not a de Polignac number, because 664017 - 2³ = 664009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (664019) 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, 109 + ... + 1157.

It is an arithmetic number, because the mean of its divisors is an integer number (111300).

2⁶⁶⁴⁰¹⁷ is an apocalyptic number.

It is an amenable number.

664017 is a deficient number, since it is larger than the sum of its proper divisors (226383).

664017 is a wasteful number, since it uses less digits than its factorization.

664017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 664017 is about 814.8723826465. The cubic root of 664017 is about 87.2421579529.

The spelling of 664017 in words is "six hundred sixty-four thousand, seventeen".