286561973 has 2 divisors, whose sum is σ = 286561974. Its totient is φ = 286561972.

The previous prime is 286561967. The next prime is 286561999. The reversal of 286561973 is 379165682.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 274465489 + 12096484 = 16567^2 + 3478^2 .

It is a cyclic number.

It is not a de Polignac number, because 286561973 - 2¹⁶ = 286496437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (286561273) 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, 143280986 + 143280987.

It is an arithmetic number, because the mean of its divisors is an integer number (143280987).

Almost surely, 2^286561973 is an apocalyptic number.

It is an amenable number.

286561973 is a deficient number, since it is larger than the sum of its proper divisors (1).

286561973 is an equidigital number, since it uses as much as digits as its factorization.

286561973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 47.

The square root of 286561973 is about 16928.1414514411. The cubic root of 286561973 is about 659.2844809233.

The spelling of 286561973 in words is "two hundred eighty-six million, five hundred sixty-one thousand, nine hundred seventy-three".