206422667 has 16 divisors (see below), whose sum is σ = 239263200. Its totient is φ = 176279040.

The previous prime is 206422633. The next prime is 206422673. The reversal of 206422667 is 766224602.

It is a cyclic number.

It is not a de Polignac number, because 206422667 - 2⁶ = 206422603 is a prime.

It is a super-2 number, since 2×206422667² = 85220634902785778, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (206422607) 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 15 ways as a sum of consecutive naturals, for example, 3059 + ... + 20547.

It is an arithmetic number, because the mean of its divisors is an integer number (14953950).

Almost surely, 2^206422667 is an apocalyptic number.

206422667 is a deficient number, since it is larger than the sum of its proper divisors (32840533).

206422667 is a wasteful number, since it uses less digits than its factorization.

206422667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17566.

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 206422667 is about 14367.4168520302. The cubic root of 206422667 is about 590.9977057543.

The spelling of 206422667 in words is "two hundred six million, four hundred twenty-two thousand, six hundred sixty-seven".