578880649 has 2 divisors, whose sum is σ = 578880650. Its totient is φ = 578880648.

The previous prime is 578880647. The next prime is 578880677. The reversal of 578880649 is 946088875.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 432640000 + 146240649 = 20800^2 + 12093^2 .

It is a cyclic number.

It is not a de Polignac number, because 578880649 - 2¹ = 578880647 is a prime.

It is a super-2 number, since 2×578880649² = 670205611573322402, which contains 22 as substring.

Together with 578880647, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 578880649.

It is not a weakly prime, because it can be changed into another prime (578880641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 289440324 + 289440325.

It is an arithmetic number, because the mean of its divisors is an integer number (289440325).

Almost surely, 2^578880649 is an apocalyptic number.

It is an amenable number.

578880649 is a deficient number, since it is larger than the sum of its proper divisors (1).

578880649 is an equidigital number, since it uses as much as digits as its factorization.

578880649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3870720, while the sum is 55.

The square root of 578880649 is about 24059.9386740698. The cubic root of 578880649 is about 833.4182584205.

The spelling of 578880649 in words is "five hundred seventy-eight million, eight hundred eighty thousand, six hundred forty-nine".