422667 has 12 divisors (see below), whose sum is σ = 697840. Its totient is φ = 241488.

The previous prime is 422657. The next prime is 422689. The reversal of 422667 is 766224.

It is not a de Polignac number, because 422667 - 2¹⁰ = 421643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 422667.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 422667.

It is not an unprimeable number, because it can be changed into a prime (422627) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3292 + ... + 3417.

2⁴²²⁶⁶⁷ is an apocalyptic number.

422667 is a deficient number, since it is larger than the sum of its proper divisors (275173).

422667 is a wasteful number, since it uses less digits than its factorization.

422667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6722 (or 6719 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 422667 is about 650.1284488468. The cubic root of 422667 is about 75.0469039941.

It can be divided in two parts, 422 and 667, that added together give a square (1089 = 33²).

The spelling of 422667 in words is "four hundred twenty-two thousand, six hundred sixty-seven".