2130666 has 8 divisors (see below), whose sum is σ = 4261344. Its totient is φ = 710220.

The previous prime is 2130631. The next prime is 2130671. The reversal of 2130666 is 6660312.

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

2130666 is an admirable number.

It is a Curzon number.

It is a plaindrome in base 11.

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, 177550 + ... + 177561.

It is an arithmetic number, because the mean of its divisors is an integer number (532668).

2^2130666 is an apocalyptic number.

2130666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2130666 is a wasteful number, since it uses less digits than its factorization.

2130666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355116.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 2130666 is about 1459.6801019401. The cubic root of 2130666 is about 128.6782438627.

Adding to 2130666 its reverse (6660312), we get a palindrome (8790978).

The spelling of 2130666 in words is "two million, one hundred thirty thousand, six hundred sixty-six".