578634 has 32 divisors (see below), whose sum is σ = 1382400. Its totient is φ = 157872.

The previous prime is 578621. The next prime is 578647. The reversal of 578634 is 436875.

It is an interprime number because it is at equal distance from previous prime (578621) and next prime (578647).

It is a junction number, because it is equal to n+sod(n) for n = 578595 and 578604.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 667 + ... + 1265.

It is an arithmetic number, because the mean of its divisors is an integer number (43200).

2⁵⁷⁸⁶³⁴ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 578634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (691200).

578634 is an abundant number, since it is smaller than the sum of its proper divisors (803766).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

578634 is a wasteful number, since it uses less digits than its factorization.

578634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634.

The product of its digits is 20160, while the sum is 33.

The square root of 578634 is about 760.6799589841. The cubic root of 578634 is about 83.3299874212.

The spelling of 578634 in words is "five hundred seventy-eight thousand, six hundred thirty-four".