875638 has 4 divisors (see below), whose sum is σ = 1313460. Its totient is φ = 437818.

The previous prime is 875629. The next prime is 875647. The reversal of 875638 is 836578.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 836578 = 2 ⋅418289.

It is an interprime number because it is at equal distance from previous prime (875629) and next prime (875647).

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 875597 and 875606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 218908 + ... + 218911.

It is an arithmetic number, because the mean of its divisors is an integer number (328365).

2⁸⁷⁵⁶³⁸ is an apocalyptic number.

875638 is a deficient number, since it is larger than the sum of its proper divisors (437822).

875638 is a wasteful number, since it uses less digits than its factorization.

875638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437821.

The product of its digits is 40320, while the sum is 37.

The square root of 875638 is about 935.7553098968. The cubic root of 875638 is about 95.6698001593.

Subtracting from 875638 its reverse (836578), we obtain a triangular number (39060 = T₂₇₉).

It can be divided in two parts, 87563 and 8, that added together give a triangular number (87571 = T₄₁₈).

The spelling of 875638 in words is "eight hundred seventy-five thousand, six hundred thirty-eight".