1022867 has 4 divisors (see below), whose sum is σ = 1024896. Its totient is φ = 1020840.

The previous prime is 1022849. The next prime is 1022869. The reversal of 1022867 is 7682201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1022867 - 2⁸ = 1022611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1022869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398 + ... + 1484.

It is an arithmetic number, because the mean of its divisors is an integer number (256224).

2^1022867 is an apocalyptic number.

1022867 is a deficient number, since it is larger than the sum of its proper divisors (2029).

1022867 is an equidigital number, since it uses as much as digits as its factorization.

1022867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 1022867 is about 1011.3688743480. The cubic root of 1022867 is about 100.7564960397.

The spelling of 1022867 in words is "one million, twenty-two thousand, eight hundred sixty-seven".