2196670643 has 16 divisors (see below), whose sum is σ = 2252630016. Its totient is φ = 2141536320.

The previous prime is 2196670607. The next prime is 2196670669. The reversal of 2196670643 is 3460766912.

It is a cyclic number.

It is not a de Polignac number, because 2196670643 - 2¹⁰ = 2196669619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2196670594 and 2196670603.

It is not an unprimeable number, because it can be changed into a prime (2196670673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3480938 + ... + 3481568.

It is an arithmetic number, because the mean of its divisors is an integer number (140789376).

Almost surely, 2^2196670643 is an apocalyptic number.

2196670643 is a deficient number, since it is larger than the sum of its proper divisors (55959373).

2196670643 is a wasteful number, since it uses less digits than its factorization.

2196670643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154.

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 2196670643 is about 46868.6530956459. The cubic root of 2196670643 is about 1299.9350348206.

The spelling of 2196670643 in words is "two billion, one hundred ninety-six million, six hundred seventy thousand, six hundred forty-three".