2206397 has 4 divisors (see below), whose sum is σ = 2210880. Its totient is φ = 2201916.

The previous prime is 2206387. The next prime is 2206403. The reversal of 2206397 is 7936022.

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, and also an emirpimes, since its reverse is a distinct semiprime: 7936022 = 2 ⋅3968011.

It is a cyclic number.

It is not a de Polignac number, because 2206397 - 2¹⁰ = 2205373 is a prime.

It is a d-powerful number, because it can be written as 2 + 2¹⁹ + 0 + 6⁸ + 3⁴ + 9 + 7⁴ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2206327) 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, 1397 + ... + 2522.

It is an arithmetic number, because the mean of its divisors is an integer number (552720).

2^2206397 is an apocalyptic number.

It is an amenable number.

2206397 is a deficient number, since it is larger than the sum of its proper divisors (4483).

2206397 is an equidigital number, since it uses as much as digits as its factorization.

2206397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4482.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 2206397 is about 1485.3945603778. The cubic root of 2206397 is about 130.1850815412.

The spelling of 2206397 in words is "two million, two hundred six thousand, three hundred ninety-seven".