665196 has 24 divisors (see below), whose sum is σ = 1774080. Its totient is φ = 190032.

The previous prime is 665179. The next prime is 665201. The reversal of 665196 is 691566.

It is a super-4 number, since 4×665196⁴ (a number of 24 digits) contains 4444 as substring.

It is an unprimeable number.

665196 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3876 + ... + 4043.

It is an arithmetic number, because the mean of its divisors is an integer number (73920).

2⁶⁶⁵¹⁹⁶ is an apocalyptic number.

It is an amenable number.

665196 is an abundant number, since it is smaller than the sum of its proper divisors (1108884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

665196 is a wasteful number, since it uses less digits than its factorization.

665196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7933 (or 7931 counting only the distinct ones).

The product of its digits is 9720, while the sum is 33.

The square root of 665196 is about 815.5954879718. The cubic root of 665196 is about 87.2937618963.

It can be divided in two parts, 665 and 196, that added together give a triangular number (861 = T₄₁).

The spelling of 665196 in words is "six hundred sixty-five thousand, one hundred ninety-six".