822973 has 2 divisors, whose sum is σ = 822974. Its totient is φ = 822972.

The previous prime is 822971. The next prime is 822989. The reversal of 822973 is 379228.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 822649 + 324 = 907^2 + 18^2 .

It is a cyclic number.

It is not a de Polignac number, because 822973 - 2¹ = 822971 is a prime.

Together with 822971, it forms a pair of twin primes.

822973 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (822971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411486 + 411487.

It is an arithmetic number, because the mean of its divisors is an integer number (411487).

2⁸²²⁹⁷³ is an apocalyptic number.

It is an amenable number.

822973 is a deficient number, since it is larger than the sum of its proper divisors (1).

822973 is an equidigital number, since it uses as much as digits as its factorization.

822973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 31.

The square root of 822973 is about 907.1785932219. The cubic root of 822973 is about 93.7119976345.

The spelling of 822973 in words is "eight hundred twenty-two thousand, nine hundred seventy-three".