206440373 has 2 divisors, whose sum is σ = 206440374. Its totient is φ = 206440372.

The previous prime is 206440361. The next prime is 206440417. The reversal of 206440373 is 373044602.

It is a happy number.

206440373 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138839089 + 67601284 = 11783^2 + 8222^2 .

It is a cyclic number.

It is not a de Polignac number, because 206440373 - 2¹⁴ = 206423989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206440973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103220186 + 103220187.

It is an arithmetic number, because the mean of its divisors is an integer number (103220187).

Almost surely, 2^206440373 is an apocalyptic number.

It is an amenable number.

206440373 is a deficient number, since it is larger than the sum of its proper divisors (1).

206440373 is an equidigital number, since it uses as much as digits as its factorization.

206440373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 29.

The square root of 206440373 is about 14368.0330247393. The cubic root of 206440373 is about 591.0146029719.

Adding to 206440373 its reverse (373044602), we get a palindrome (579484975).

The spelling of 206440373 in words is "two hundred six million, four hundred forty thousand, three hundred seventy-three".