67284563 has 2 divisors, whose sum is σ = 67284564. Its totient is φ = 67284562.

The previous prime is 67284541. The next prime is 67284571. The reversal of 67284563 is 36548276.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67284563 - 2¹⁰ = 67283539 is a prime.

It is equal to p_3967574 and since 67284563 and 3967574 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67284563.

It is not a weakly prime, because it can be changed into another prime (67284533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33642281 + 33642282.

It is an arithmetic number, because the mean of its divisors is an integer number (33642282).

Almost surely, 2^67284563 is an apocalyptic number.

67284563 is a deficient number, since it is larger than the sum of its proper divisors (1).

67284563 is an equidigital number, since it uses as much as digits as its factorization.

67284563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 41.

The square root of 67284563 is about 8202.7168060344. The cubic root of 67284563 is about 406.7290060156.

The spelling of 67284563 in words is "sixty-seven million, two hundred eighty-four thousand, five hundred sixty-three".