860659 has 4 divisors (see below), whose sum is σ = 911304. Its totient is φ = 810016.

The previous prime is 860647. The next prime is 860663. The reversal of 860659 is 956068.

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

It is not a de Polignac number, because 860659 - 2¹⁷ = 729587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (860609) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 25297 + ... + 25330.

It is an arithmetic number, because the mean of its divisors is an integer number (227826).

2⁸⁶⁰⁶⁵⁹ is an apocalyptic number.

860659 is a deficient number, since it is larger than the sum of its proper divisors (50645).

860659 is a wasteful number, since it uses less digits than its factorization.

860659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50644.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 860659 is about 927.7170904969. The cubic root of 860659 is about 95.1211381718.

The spelling of 860659 in words is "eight hundred sixty thousand, six hundred fifty-nine".