2191673 has 12 divisors (see below), whose sum is σ = 2457840. Its totient is φ = 1952280.

The previous prime is 2191633. The next prime is 2191687. The reversal of 2191673 is 3761912.

It is a de Polignac number, because none of the positive numbers 2^k-2191673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2191633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6986 + ... + 7292.

It is an arithmetic number, because the mean of its divisors is an integer number (204820).

2^2191673 is an apocalyptic number.

It is an amenable number.

2191673 is a deficient number, since it is larger than the sum of its proper divisors (266167).

2191673 is a wasteful number, since it uses less digits than its factorization.

2191673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388 (or 377 counting only the distinct ones).

The product of its digits is 2268, while the sum is 29.

The square root of 2191673 is about 1480.4300050999. The cubic root of 2191673 is about 129.8948459326.

The spelling of 2191673 in words is "two million, one hundred ninety-one thousand, six hundred seventy-three".