2209697 has 4 divisors (see below), whose sum is σ = 2525376. Its totient is φ = 1894020.

The previous prime is 2209693. The next prime is 2209699. The reversal of 2209697 is 7969022.

2209697 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2209697 - 2² = 2209693 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2209693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157829 + ... + 157842.

It is an arithmetic number, because the mean of its divisors is an integer number (631344).

2^2209697 is an apocalyptic number.

It is an amenable number.

2209697 is a deficient number, since it is larger than the sum of its proper divisors (315679).

2209697 is an equidigital number, since it uses as much as digits as its factorization.

2209697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315678.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 2209697 is about 1486.5049613103. The cubic root of 2209697 is about 130.2499530284.

The spelling of 2209697 in words is "two million, two hundred nine thousand, six hundred ninety-seven".