2196426665 has 8 divisors (see below), whose sum is σ = 2645093448. Its totient is φ = 1750887040.

The previous prime is 2196426647. The next prime is 2196426667. The reversal of 2196426665 is 5666246912.

It can be written as a sum of positive squares in 4 ways, for example, as 821796889 + 1374629776 = 28667^2 + 37076^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2196426665 - 2¹⁸ = 2196164521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2196426667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 780242 + ... + 783051.

It is an arithmetic number, because the mean of its divisors is an integer number (330636681).

Almost surely, 2^2196426665 is an apocalyptic number.

It is an amenable number.

2196426665 is a deficient number, since it is larger than the sum of its proper divisors (448666783).

2196426665 is a wasteful number, since it uses less digits than its factorization.

2196426665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563579.

The product of its digits is 933120, while the sum is 47.

The square root of 2196426665 is about 46866.0502389523. The cubic root of 2196426665 is about 1299.8869063353.

The spelling of 2196426665 in words is "two billion, one hundred ninety-six million, four hundred twenty-six thousand, six hundred sixty-five".