2183668 has 6 divisors (see below), whose sum is σ = 3821426. Its totient is φ = 1091832.

The previous prime is 2183663. The next prime is 2183681. The reversal of 2183668 is 8663812.

It can be written as a sum of positive squares in only one way, i.e., 1507984 + 675684 = 1228^2 + 822^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2183663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272955 + ... + 272962.

2^2183668 is an apocalyptic number.

It is an amenable number.

2183668 is a deficient number, since it is larger than the sum of its proper divisors (1637758).

2183668 is a wasteful number, since it uses less digits than its factorization.

2183668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545921 (or 545919 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 2183668 is about 1477.7239255016. The cubic root of 2183668 is about 129.7365077180.

It can be divided in two parts, 21836 and 68, that added together give a square (21904 = 148²).

The spelling of 2183668 in words is "two million, one hundred eighty-three thousand, six hundred sixty-eight".