206380747 has 2 divisors, whose sum is σ = 206380748. Its totient is φ = 206380746.

The previous prime is 206380723. The next prime is 206380753. The reversal of 206380747 is 747083602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 206380747 - 2¹⁵ = 206347979 is a prime.

It is a super-3 number, since 3×206380747³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (206380777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103190373 + 103190374.

It is an arithmetic number, because the mean of its divisors is an integer number (103190374).

Almost surely, 2^206380747 is an apocalyptic number.

206380747 is a deficient number, since it is larger than the sum of its proper divisors (1).

206380747 is an equidigital number, since it uses as much as digits as its factorization.

206380747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 206380747 is about 14365.9579214197. The cubic root of 206380747 is about 590.9576967420.

The spelling of 206380747 in words is "two hundred six million, three hundred eighty thousand, seven hundred forty-seven".