2166680630 has 16 divisors (see below), whose sum is σ = 3903399504. Its totient is φ = 865922400.

The previous prime is 2166680609. The next prime is 2166680641. The reversal of 2166680630 is 360866612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81521 + ... + 104780.

It is an arithmetic number, because the mean of its divisors is an integer number (243962469).

Almost surely, 2^2166680630 is an apocalyptic number.

2166680630 is a deficient number, since it is larger than the sum of its proper divisors (1736718874).

2166680630 is a wasteful number, since it uses less digits than its factorization.

2166680630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187471.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 2166680630 is about 46547.6168025818. The cubic root of 2166680630 is about 1293.9921258580.

The spelling of 2166680630 in words is "two billion, one hundred sixty-six million, six hundred eighty thousand, six hundred thirty".