1022667 has 4 divisors (see below), whose sum is σ = 1363560. Its totient is φ = 681776.

The previous prime is 1022653. The next prime is 1022677. The reversal of 1022667 is 7662201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7662201 = 3 ⋅2554067.

It is a cyclic number.

It is not a de Polignac number, because 1022667 - 2¹¹ = 1020619 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1022677) 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, 170442 + ... + 170447.

It is an arithmetic number, because the mean of its divisors is an integer number (340890).

2^1022667 is an apocalyptic number.

1022667 is a deficient number, since it is larger than the sum of its proper divisors (340893).

1022667 is an equidigital number, since it uses as much as digits as its factorization.

1022667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340892.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 1022667 is about 1011.2699936219. The cubic root of 1022667 is about 100.7499286780.

Adding to 1022667 its reverse (7662201), we get a palindrome (8684868).

The spelling of 1022667 in words is "one million, twenty-two thousand, six hundred sixty-seven".