2196655 has 16 divisors (see below), whose sum is σ = 2860704. Its totient is φ = 1612800.

The previous prime is 2196641. The next prime is 2196659. The reversal of 2196655 is 5566912.

It is a happy number.

It is not a de Polignac number, because 2196655 - 2⁹ = 2196143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2196655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2196659) 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, 3355 + ... + 3955.

It is an arithmetic number, because the mean of its divisors is an integer number (178794).

2^2196655 is an apocalyptic number.

2196655 is a deficient number, since it is larger than the sum of its proper divisors (664049).

2196655 is a wasteful number, since it uses less digits than its factorization.

2196655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666.

The product of its digits is 16200, while the sum is 34.

The square root of 2196655 is about 1482.1116692071. Note that the first 3 decimals coincide. The cubic root of 2196655 is about 129.9931949101.

The spelling of 2196655 in words is "two million, one hundred ninety-six thousand, six hundred fifty-five".