860638 has 4 divisors (see below), whose sum is σ = 1290960. Its totient is φ = 430318.

The previous prime is 860623. The next prime is 860641. The reversal of 860638 is 836068.

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

It is a congruent number.

It is an unprimeable number.

860638 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 215158 + ... + 215161.

It is an arithmetic number, because the mean of its divisors is an integer number (322740).

2⁸⁶⁰⁶³⁸ is an apocalyptic number.

860638 is a deficient number, since it is larger than the sum of its proper divisors (430322).

860638 is a wasteful number, since it uses less digits than its factorization.

860638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430321.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 860638 is about 927.7057723222. The cubic root of 860638 is about 95.1203645165.

The spelling of 860638 in words is "eight hundred sixty thousand, six hundred thirty-eight".