2196679 has 4 divisors (see below), whose sum is σ = 2206584. Its totient is φ = 2186776.

The previous prime is 2196673. The next prime is 2196697. The reversal of 2196679 is 9766912.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2196679 - 2⁹ = 2196167 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2196673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4612 + ... + 5065.

It is an arithmetic number, because the mean of its divisors is an integer number (551646).

2^2196679 is an apocalyptic number.

2196679 is a deficient number, since it is larger than the sum of its proper divisors (9905).

2196679 is an equidigital number, since it uses as much as digits as its factorization.

2196679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9904.

The product of its digits is 40824, while the sum is 40.

The square root of 2196679 is about 1482.1197657409. The cubic root of 2196679 is about 129.9936683307.

The spelling of 2196679 in words is "two million, one hundred ninety-six thousand, six hundred seventy-nine".