280270673 has 2 divisors, whose sum is σ = 280270674. Its totient is φ = 280270672.

The previous prime is 280270649. The next prime is 280270681. The reversal of 280270673 is 376072082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142372624 + 137898049 = 11932^2 + 11743^2 .

It is a cyclic number.

It is not a de Polignac number, because 280270673 - 2²² = 276076369 is a prime.

It is not a weakly prime, because it can be changed into another prime (280270643) 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, 140135336 + 140135337.

It is an arithmetic number, because the mean of its divisors is an integer number (140135337).

Almost surely, 2^280270673 is an apocalyptic number.

It is an amenable number.

280270673 is a deficient number, since it is larger than the sum of its proper divisors (1).

280270673 is an equidigital number, since it uses as much as digits as its factorization.

280270673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 280270673 is about 16741.2864798378. The cubic root of 280270673 is about 654.4240011296.

The spelling of 280270673 in words is "two hundred eighty million, two hundred seventy thousand, six hundred seventy-three".