2665812196 has 6 divisors (see below), whose sum is σ = 4665171350. Its totient is φ = 1332906096.

The previous prime is 2665812167. The next prime is 2665812197. The reversal of 2665812196 is 6912185662.

It can be written as a sum of positive squares in only one way, i.e., 1679852196 + 985960000 = 40986^2 + 31400^2 .

It is not an unprimeable number, because it can be changed into a prime (2665812197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333226521 + ... + 333226528.

Almost surely, 2^2665812196 is an apocalyptic number.

It is an amenable number.

2665812196 is a deficient number, since it is larger than the sum of its proper divisors (1999359154).

2665812196 is a wasteful number, since it uses less digits than its factorization.

2665812196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666453053 (or 666453051 counting only the distinct ones).

The product of its digits is 311040, while the sum is 46.

The square root of 2665812196 is about 51631.5039099192. The cubic root of 2665812196 is about 1386.5744186610.

The spelling of 2665812196 in words is "two billion, six hundred sixty-five million, eight hundred twelve thousand, one hundred ninety-six".