1646116 has 6 divisors (see below), whose sum is σ = 2880710. Its totient is φ = 823056.

The previous prime is 1646111. The next prime is 1646143. The reversal of 1646116 is 6116461.

It can be written as a sum of positive squares in only one way, i.e., 1440000 + 206116 = 1200^2 + 454^2 .

It is not an unprimeable number, because it can be changed into a prime (1646111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 205761 + ... + 205768.

2^1646116 is an apocalyptic number.

It is an amenable number.

1646116 is a deficient number, since it is larger than the sum of its proper divisors (1234594).

1646116 is a wasteful number, since it uses less digits than its factorization.

1646116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411533 (or 411531 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

The square root of 1646116 is about 1283.0105221704. The cubic root of 1646116 is about 118.0737832145.

The spelling of 1646116 in words is "one million, six hundred forty-six thousand, one hundred sixteen".