270809863 has 2 divisors, whose sum is σ = 270809864. Its totient is φ = 270809862.

The previous prime is 270809839. The next prime is 270809897. The reversal of 270809863 is 368908072.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-270809863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (270809263) 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, 135404931 + 135404932.

It is an arithmetic number, because the mean of its divisors is an integer number (135404932).

Almost surely, 2^270809863 is an apocalyptic number.

270809863 is a deficient number, since it is larger than the sum of its proper divisors (1).

270809863 is an equidigital number, since it uses as much as digits as its factorization.

270809863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 270809863 is about 16456.3016197443. The cubic root of 270809863 is about 646.9759830617.

The spelling of 270809863 in words is "two hundred seventy million, eight hundred nine thousand, eight hundred sixty-three".