578881649 has 2 divisors, whose sum is σ = 578881650. Its totient is φ = 578881648.

The previous prime is 578881519. The next prime is 578881651. The reversal of 578881649 is 946188875.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 317089249 + 261792400 = 17807^2 + 16180^2 .

It is a cyclic number.

It is not a de Polignac number, because 578881649 - 2¹² = 578877553 is a prime.

Together with 578881651, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 578881594 and 578881603.

It is not a weakly prime, because it can be changed into another prime (578880649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 289440824 + 289440825.

It is an arithmetic number, because the mean of its divisors is an integer number (289440825).

Almost surely, 2^578881649 is an apocalyptic number.

It is an amenable number.

578881649 is a deficient number, since it is larger than the sum of its proper divisors (1).

578881649 is an equidigital number, since it uses as much as digits as its factorization.

578881649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3870720, while the sum is 56.

The square root of 578881649 is about 24059.9594554937. The cubic root of 578881649 is about 833.4187383224.

The spelling of 578881649 in words is "five hundred seventy-eight million, eight hundred eighty-one thousand, six hundred forty-nine".