286622561 has 2 divisors, whose sum is σ = 286622562. Its totient is φ = 286622560.

The previous prime is 286622549. The next prime is 286622593. The reversal of 286622561 is 165226682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 226653025 + 59969536 = 15055^2 + 7744^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-286622561 is a prime.

It is not a weakly prime, because it can be changed into another prime (286622521) 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, 143311280 + 143311281.

It is an arithmetic number, because the mean of its divisors is an integer number (143311281).

Almost surely, 2^286622561 is an apocalyptic number.

It is an amenable number.

286622561 is a deficient number, since it is larger than the sum of its proper divisors (1).

286622561 is an equidigital number, since it uses as much as digits as its factorization.

286622561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 38.

The square root of 286622561 is about 16929.9309213003. The cubic root of 286622561 is about 659.3309419766.

The spelling of 286622561 in words is "two hundred eighty-six million, six hundred twenty-two thousand, five hundred sixty-one".