2097166 has 4 divisors (see below), whose sum is σ = 3145752. Its totient is φ = 1048582.

The previous prime is 2097143. The next prime is 2097169. The reversal of 2097166 is 6617902.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6617902 = 2 ⋅3308951.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2097169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 524290 + ... + 524293.

It is an arithmetic number, because the mean of its divisors is an integer number (786438).

2^2097166 is an apocalyptic number.

2097166 is a deficient number, since it is larger than the sum of its proper divisors (1048586).

2097166 is a wasteful number, since it uses less digits than its factorization.

2097166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048585.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 2097166 is about 1448.1595215997. The cubic root of 2097166 is about 128.0002848301. Note that the first 3 decimals are identical.

The spelling of 2097166 in words is "two million, ninety-seven thousand, one hundred sixty-six".