578642 has 8 divisors (see below), whose sum is σ = 871500. Its totient is φ = 288144.

The previous prime is 578621. The next prime is 578647. The reversal of 578642 is 246875.

It can be written as a sum of positive squares in 2 ways, for example, as 564001 + 14641 = 751^2 + 121^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 578599 and 578608.

It is not an unprimeable number, because it can be changed into a prime (578647) by changing a digit.

578642 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284 + ... + 1112.

2⁵⁷⁸⁶⁴² is an apocalyptic number.

578642 is a deficient number, since it is larger than the sum of its proper divisors (292858).

578642 is a wasteful number, since it uses less digits than its factorization.

578642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180.

The product of its digits is 13440, while the sum is 32.

The square root of 578642 is about 760.6852174191. The cubic root of 578642 is about 83.3303714503.

The spelling of 578642 in words is "five hundred seventy-eight thousand, six hundred forty-two".