1797823 has 2 divisors, whose sum is σ = 1797824. Its totient is φ = 1797822.

The previous prime is 1797821. The next prime is 1797827. The reversal of 1797823 is 3287971.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1797823 - 2¹ = 1797821 is a prime.

Together with 1797821, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1797821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 898911 + 898912.

It is an arithmetic number, because the mean of its divisors is an integer number (898912).

2^1797823 is an apocalyptic number.

1797823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1797823 is an equidigital number, since it uses as much as digits as its factorization.

1797823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 37.

The square root of 1797823 is about 1340.8292210420. The cubic root of 1797823 is about 121.5949795581.

The spelling of 1797823 in words is "one million, seven hundred ninety-seven thousand, eight hundred twenty-three".