2130663 has 4 divisors (see below), whose sum is σ = 2840888. Its totient is φ = 1420440.

The previous prime is 2130631. The next prime is 2130671. The reversal of 2130663 is 3660312.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2130663 - 2⁵ = 2130631 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130613) 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, 355108 + ... + 355113.

It is an arithmetic number, because the mean of its divisors is an integer number (710222).

2^2130663 is an apocalyptic number.

2130663 is a deficient number, since it is larger than the sum of its proper divisors (710225).

2130663 is an equidigital number, since it uses as much as digits as its factorization.

2130663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710224.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 2130663 is about 1459.6790743174. The cubic root of 2130663 is about 128.6781834692.

Adding to 2130663 its reverse (3660312), we get a palindrome (5790975).

The spelling of 2130663 in words is "two million, one hundred thirty thousand, six hundred sixty-three".