578671 has 4 divisors (see below), whose sum is σ = 586672. Its totient is φ = 570672.

The previous prime is 578659. The next prime is 578687. The reversal of 578671 is 176875.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-578671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (578621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3891 + ... + 4036.

It is an arithmetic number, because the mean of its divisors is an integer number (146668).

2⁵⁷⁸⁶⁷¹ is an apocalyptic number.

578671 is a deficient number, since it is larger than the sum of its proper divisors (8001).

578671 is an equidigital number, since it uses as much as digits as its factorization.

578671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8000.

The product of its digits is 11760, while the sum is 34.

The square root of 578671 is about 760.7042789416. The cubic root of 578671 is about 83.3317635260.

The spelling of 578671 in words is "five hundred seventy-eight thousand, six hundred seventy-one".