205040747 has 2 divisors, whose sum is σ = 205040748. Its totient is φ = 205040746.

The previous prime is 205040683. The next prime is 205040821. The reversal of 205040747 is 747040502.

205040747 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 is a cyclic number.

It is not a de Polignac number, because 205040747 - 2⁶ = 205040683 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (205040047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102520373 + 102520374.

It is an arithmetic number, because the mean of its divisors is an integer number (102520374).

Almost surely, 2^205040747 is an apocalyptic number.

205040747 is a deficient number, since it is larger than the sum of its proper divisors (1).

205040747 is an equidigital number, since it uses as much as digits as its factorization.

205040747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 205040747 is about 14319.2439395381. The cubic root of 205040747 is about 589.6759179665.

The spelling of 205040747 in words is "two hundred five million, forty thousand, seven hundred forty-seven".