2196623680 has 28 divisors (see below), whose sum is σ = 5230710900. Its totient is φ = 878649344.

The previous prime is 2196623657. The next prime is 2196623701. The reversal of 2196623680 is 863266912.

It can be written as a sum of positive squares in 2 ways, for example, as 1752594496 + 444029184 = 41864^2 + 21072^2 .

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 3 ways as a sum of consecutive naturals, for example, 3431905 + ... + 3432544.

Almost surely, 2^2196623680 is an apocalyptic number.

2196623680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2196623680 is an abundant number, since it is smaller than the sum of its proper divisors (3034087220).

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

2196623680 is an equidigital number, since it uses as much as digits as its factorization.

2196623680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6864466 (or 6864456 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 2196623680 is about 46868.1520864649. The cubic root of 2196623680 is about 1299.9257709096.

The spelling of 2196623680 in words is "two billion, one hundred ninety-six million, six hundred twenty-three thousand, six hundred eighty".