285634747 has 2 divisors, whose sum is σ = 285634748. Its totient is φ = 285634746.

The previous prime is 285634729. The next prime is 285634763. The reversal of 285634747 is 747436582.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 285634747 - 2¹⁹ = 285110459 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 285634697 and 285634706.

It is not a weakly prime, because it can be changed into another prime (285634777) 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 as a sum of consecutive naturals, namely, 142817373 + 142817374.

It is an arithmetic number, because the mean of its divisors is an integer number (142817374).

Almost surely, 2^285634747 is an apocalyptic number.

285634747 is a deficient number, since it is larger than the sum of its proper divisors (1).

285634747 is an equidigital number, since it uses as much as digits as its factorization.

285634747 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1128960, while the sum is 46.

The square root of 285634747 is about 16900.7321439043. The cubic root of 285634747 is about 658.5726323069.

The spelling of 285634747 in words is "two hundred eighty-five million, six hundred thirty-four thousand, seven hundred forty-seven".