2161774 has 8 divisors (see below), whose sum is σ = 3257280. Its totient is φ = 1076016.

The previous prime is 2161769. The next prime is 2161777. The reversal of 2161774 is 4771612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1854 + ... + 2785.

It is an arithmetic number, because the mean of its divisors is an integer number (407160).

2^2161774 is an apocalyptic number.

2161774 is a deficient number, since it is larger than the sum of its proper divisors (1095506).

2161774 is a wasteful number, since it uses less digits than its factorization.

2161774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4874.

The product of its digits is 2352, while the sum is 28.

The square root of 2161774 is about 1470.2972488582. The cubic root of 2161774 is about 129.3014603028.

The spelling of 2161774 in words is "two million, one hundred sixty-one thousand, seven hundred seventy-four".