826667 has 2 divisors, whose sum is σ = 826668. Its totient is φ = 826666.

The previous prime is 826663. The next prime is 826669. The reversal of 826667 is 766628.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 826667 - 2² = 826663 is a prime.

Together with 826669, it forms a pair of twin primes.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 826667.

It is not a weakly prime, because it can be changed into another prime (826663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413333 + 413334.

It is an arithmetic number, because the mean of its divisors is an integer number (413334).

2⁸²⁶⁶⁶⁷ is an apocalyptic number.

826667 is a deficient number, since it is larger than the sum of its proper divisors (1).

826667 is an equidigital number, since it uses as much as digits as its factorization.

826667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 35.

The square root of 826667 is about 909.2122964413. The cubic root of 826667 is about 93.8520003903.

The spelling of 826667 in words is "eight hundred twenty-six thousand, six hundred sixty-seven".