206422673 has 2 divisors, whose sum is σ = 206422674. Its totient is φ = 206422672.

The previous prime is 206422633. The next prime is 206422679. The reversal of 206422673 is 376224602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166074769 + 40347904 = 12887^2 + 6352^2 .

It is a cyclic number.

It is not a de Polignac number, because 206422673 - 2¹² = 206418577 is a prime.

It is a super-2 number, since 2×206422673² = 85220639856929858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (206422679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103211336 + 103211337.

It is an arithmetic number, because the mean of its divisors is an integer number (103211337).

Almost surely, 2^206422673 is an apocalyptic number.

It is an amenable number.

206422673 is a deficient number, since it is larger than the sum of its proper divisors (1).

206422673 is an equidigital number, since it uses as much as digits as its factorization.

206422673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 206422673 is about 14367.4170608360. The cubic root of 206422673 is about 590.9977114804.

The spelling of 206422673 in words is "two hundred six million, four hundred twenty-two thousand, six hundred seventy-three".