2126666 has 8 divisors (see below), whose sum is σ = 3377700. Its totient is φ = 1000768.

The previous prime is 2126659. The next prime is 2126681. The reversal of 2126666 is 6666212.

It can be written as a sum of positive squares in 2 ways, for example, as 1615441 + 511225 = 1271^2 + 715^2 .

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

2126666 is a modest number, since divided by 6666 gives 212 as remainder.

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, 31241 + ... + 31308.

2^2126666 is an apocalyptic number.

2126666 is a deficient number, since it is larger than the sum of its proper divisors (1251034).

2126666 is a wasteful number, since it uses less digits than its factorization.

2126666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62568.

The product of its digits is 5184, while the sum is 29.

The square root of 2126666 is about 1458.3092950400. The cubic root of 2126666 is about 128.5976688359.

The spelling of 2126666 in words is "two million, one hundred twenty-six thousand, six hundred sixty-six".