578778843 has 4 divisors (see below), whose sum is σ = 771705128. Its totient is φ = 385852560.

The previous prime is 578778841. The next prime is 578778853. The reversal of 578778843 is 348877875.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 578778843 - 2¹ = 578778841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (578778841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96463138 + ... + 96463143.

It is an arithmetic number, because the mean of its divisors is an integer number (192926282).

Almost surely, 2^578778843 is an apocalyptic number.

578778843 is a deficient number, since it is larger than the sum of its proper divisors (192926285).

578778843 is a wasteful number, since it uses less digits than its factorization.

578778843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192926284.

The product of its digits is 10536960, while the sum is 57.

The square root of 578778843 is about 24057.8229064893. The cubic root of 578778843 is about 833.3693986347.

The spelling of 578778843 in words is "five hundred seventy-eight million, seven hundred seventy-eight thousand, eight hundred forty-three".