578347978 has 16 divisors (see below), whose sum is σ = 951884136. Its totient is φ = 261892800.

The previous prime is 578347963. The next prime is 578347993. The reversal of 578347978 is 879743875.

578347978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (578347963) and next prime (578347993).

It can be written as a sum of positive squares in 4 ways, for example, as 522442449 + 55905529 = 22857^2 + 7477^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208473 + ... + 211228.

Almost surely, 2^578347978 is an apocalyptic number.

578347978 is a deficient number, since it is larger than the sum of its proper divisors (373536158).

578347978 is a wasteful number, since it uses less digits than its factorization.

578347978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419769.

The product of its digits is 11854080, while the sum is 58.

The square root of 578347978 is about 24048.8664597731. The cubic root of 578347978 is about 833.1625499976.

The spelling of 578347978 in words is "five hundred seventy-eight million, three hundred forty-seven thousand, nine hundred seventy-eight".