822667 has 2 divisors, whose sum is σ = 822668. Its totient is φ = 822666.

The previous prime is 822631. The next prime is 822671. The reversal of 822667 is 766228.

It is a happy number.

822667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 822667 - 2⁷ = 822539 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (822607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 411333 + 411334.

It is an arithmetic number, because the mean of its divisors is an integer number (411334).

2⁸²²⁶⁶⁷ is an apocalyptic number.

822667 is a deficient number, since it is larger than the sum of its proper divisors (1).

822667 is an equidigital number, since it uses as much as digits as its factorization.

822667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 31.

The square root of 822667 is about 907.0099227682. The cubic root of 822667 is about 93.7003814470.

The spelling of 822667 in words is "eight hundred twenty-two thousand, six hundred sixty-seven".