2196689 has 12 divisors (see below), whose sum is σ = 2549328. Its totient is φ = 1876800.

The previous prime is 2196673. The next prime is 2196697. The reversal of 2196689 is 9866912.

It is not a de Polignac number, because 2196689 - 2⁴ = 2196673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2196619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2834 + ... + 3524.

It is an arithmetic number, because the mean of its divisors is an integer number (212444).

2^2196689 is an apocalyptic number.

It is an amenable number.

2196689 is a deficient number, since it is larger than the sum of its proper divisors (352639).

2196689 is a wasteful number, since it uses less digits than its factorization.

2196689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736 (or 719 counting only the distinct ones).

The product of its digits is 46656, while the sum is 41.

The square root of 2196689 is about 1482.1231392836. The cubic root of 2196689 is about 129.9938655882.

It can be divided in two parts, 2 and 196689, that added together give a palindrome (196691).

The spelling of 2196689 in words is "two million, one hundred ninety-six thousand, six hundred eighty-nine".