1666316 has 6 divisors (see below), whose sum is σ = 2916060. Its totient is φ = 833156.

The previous prime is 1666309. The next prime is 1666321. The reversal of 1666316 is 6136661.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208286 + ... + 208293.

It is an arithmetic number, because the mean of its divisors is an integer number (486010).

2^1666316 is an apocalyptic number.

It is an amenable number.

1666316 is a deficient number, since it is larger than the sum of its proper divisors (1249744).

1666316 is a wasteful number, since it uses less digits than its factorization.

1666316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416583 (or 416581 counting only the distinct ones).

The product of its digits is 3888, while the sum is 29.

The square root of 1666316 is about 1290.8586289753. The cubic root of 1666316 is about 118.5547943403.

The spelling of 1666316 in words is "one million, six hundred sixty-six thousand, three hundred sixteen".