2111668 has 12 divisors (see below), whose sum is σ = 3979780. Its totient is φ = 974592.

The previous prime is 2111633. The next prime is 2111677. The reversal of 2111668 is 8661112.

It can be written as a sum of positive squares in 2 ways, for example, as 374544 + 1737124 = 612^2 + 1318^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20253 + ... + 20356.

2^2111668 is an apocalyptic number.

It is an amenable number.

2111668 is a deficient number, since it is larger than the sum of its proper divisors (1868112).

2111668 is a wasteful number, since it uses less digits than its factorization.

2111668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40626 (or 40624 counting only the distinct ones).

The product of its digits is 576, while the sum is 25.

The square root of 2111668 is about 1453.1579404869. The cubic root of 2111668 is about 128.2946499852.

The spelling of 2111668 in words is "two million, one hundred eleven thousand, six hundred sixty-eight".