664196 has 24 divisors (see below), whose sum is σ = 1280664. Its totient is φ = 299520.

The previous prime is 664193. The next prime is 664199. The reversal of 664196 is 691466.

It is an interprime number because it is at equal distance from previous prime (664193) and next prime (664199).

It can be written as a sum of positive squares in 4 ways, for example, as 122500 + 541696 = 350^2 + 736^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664193) 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, 2636 + ... + 2876.

It is an arithmetic number, because the mean of its divisors is an integer number (53361).

2⁶⁶⁴¹⁹⁶ is an apocalyptic number.

It is an amenable number.

664196 is a deficient number, since it is larger than the sum of its proper divisors (616468).

664196 is a wasteful number, since it uses less digits than its factorization.

664196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311 (or 309 counting only the distinct ones).

The product of its digits is 7776, while the sum is 32.

The square root of 664196 is about 814.9822083948. The cubic root of 664196 is about 87.2499965791.

The spelling of 664196 in words is "six hundred sixty-four thousand, one hundred ninety-six".