280658713 has 2 divisors, whose sum is σ = 280658714. Its totient is φ = 280658712.

The previous prime is 280658687. The next prime is 280658731. The reversal of 280658713 is 317856082.

Together with next prime (280658731) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150994944 + 129663769 = 12288^2 + 11387^2 .

It is a cyclic number.

It is not a de Polignac number, because 280658713 - 2¹³ = 280650521 is a prime.

It is not a weakly prime, because it can be changed into another prime (280658783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140329356 + 140329357.

It is an arithmetic number, because the mean of its divisors is an integer number (140329357).

Almost surely, 2^280658713 is an apocalyptic number.

It is an amenable number.

280658713 is a deficient number, since it is larger than the sum of its proper divisors (1).

280658713 is an equidigital number, since it uses as much as digits as its factorization.

280658713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 280658713 is about 16752.8717836674. The cubic root of 280658713 is about 654.7258826174.

The spelling of 280658713 in words is "two hundred eighty million, six hundred fifty-eight thousand, seven hundred thirteen".