2197847 has 2 divisors, whose sum is σ = 2197848. Its totient is φ = 2197846.

The previous prime is 2197799. The next prime is 2197849. The reversal of 2197847 is 7487912.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2197847 - 2¹⁴ = 2181463 is a prime.

Together with 2197849, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2197847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2197849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1098923 + 1098924.

It is an arithmetic number, because the mean of its divisors is an integer number (1098924).

2^2197847 is an apocalyptic number.

2197847 is a deficient number, since it is larger than the sum of its proper divisors (1).

2197847 is an equidigital number, since it uses as much as digits as its factorization.

2197847 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28224, while the sum is 38.

The square root of 2197847 is about 1482.5137436125. The cubic root of 2197847 is about 130.0167039680.

The spelling of 2197847 in words is "two million, one hundred ninety-seven thousand, eight hundred forty-seven".