859649 has 8 divisors (see below), whose sum is σ = 988608. Its totient is φ = 732240.

The previous prime is 859633. The next prime is 859657. The reversal of 859649 is 946958.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 859649 - 2⁴ = 859633 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (859609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1319 + ... + 1859.

It is an arithmetic number, because the mean of its divisors is an integer number (123576).

2⁸⁵⁹⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

859649 is a deficient number, since it is larger than the sum of its proper divisors (128959).

859649 is a wasteful number, since it uses less digits than its factorization.

859649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775.

The product of its digits is 77760, while the sum is 41.

The square root of 859649 is about 927.1725837189. The cubic root of 859649 is about 95.0839147748.

The spelling of 859649 in words is "eight hundred fifty-nine thousand, six hundred forty-nine".