1661196 has 12 divisors (see below), whose sum is σ = 3876152. Its totient is φ = 553728.

The previous prime is 1661173. The next prime is 1661237. The reversal of 1661196 is 6911661.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69205 + ... + 69228.

2^1661196 is an apocalyptic number.

It is an amenable number.

1661196 is an abundant number, since it is smaller than the sum of its proper divisors (2214956).

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

1661196 is a wasteful number, since it uses less digits than its factorization.

1661196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138440 (or 138438 counting only the distinct ones).

The product of its digits is 1944, while the sum is 30.

The square root of 1661196 is about 1288.8739271162. The cubic root of 1661196 is about 118.4332441042.

The spelling of 1661196 in words is "one million, six hundred sixty-one thousand, one hundred ninety-six".