873638 has 4 divisors (see below), whose sum is σ = 1310460. Its totient is φ = 436818.

The previous prime is 873619. The next prime is 873641. The reversal of 873638 is 836378.

873638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 836378 = 2 ⋅418189.

It is a junction number, because it is equal to n+sod(n) for n = 873598 and 873607.

It is a congruent number.

It is an unprimeable number.

873638 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 as a sum of consecutive naturals, namely, 218408 + ... + 218411.

It is an arithmetic number, because the mean of its divisors is an integer number (327615).

2⁸⁷³⁶³⁸ is an apocalyptic number.

873638 is a deficient number, since it is larger than the sum of its proper divisors (436822).

873638 is a wasteful number, since it uses less digits than its factorization.

873638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436821.

The product of its digits is 24192, while the sum is 35.

The square root of 873638 is about 934.6860435462. The cubic root of 873638 is about 95.5969064667.

The spelling of 873638 in words is "eight hundred seventy-three thousand, six hundred thirty-eight".