578081643 has 4 divisors (see below), whose sum is σ = 770775528. Its totient is φ = 385387760.

The previous prime is 578081633. The next prime is 578081683. The reversal of 578081643 is 346180875.

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

It is a cyclic number.

It is not a de Polignac number, because 578081643 - 2⁶ = 578081579 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 578081595 and 578081604.

It is not an unprimeable number, because it can be changed into a prime (578081633) 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, 96346938 + ... + 96346943.

It is an arithmetic number, because the mean of its divisors is an integer number (192693882).

Almost surely, 2^578081643 is an apocalyptic number.

578081643 is a deficient number, since it is larger than the sum of its proper divisors (192693885).

578081643 is a wasteful number, since it uses less digits than its factorization.

578081643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192693884.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 578081643 is about 24043.3284509446. The cubic root of 578081643 is about 833.0346371451.

The spelling of 578081643 in words is "five hundred seventy-eight million, eighty-one thousand, six hundred forty-three".