280604741 has 2 divisors, whose sum is σ = 280604742. Its totient is φ = 280604740.

The previous prime is 280604729. The next prime is 280604743. The reversal of 280604741 is 147406082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154132225 + 126472516 = 12415^2 + 11246^2 .

It is a cyclic number.

It is not a de Polignac number, because 280604741 - 2⁶ = 280604677 is a prime.

It is a Sophie Germain prime.

Together with 280604743, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 280604698 and 280604707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (280604743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140302370 + 140302371.

It is an arithmetic number, because the mean of its divisors is an integer number (140302371).

Almost surely, 2^280604741 is an apocalyptic number.

It is an amenable number.

280604741 is a deficient number, since it is larger than the sum of its proper divisors (1).

280604741 is an equidigital number, since it uses as much as digits as its factorization.

280604741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 280604741 is about 16751.2608779160. The cubic root of 280604741 is about 654.6839109640.

The spelling of 280604741 in words is "two hundred eighty million, six hundred four thousand, seven hundred forty-one".