856461 has 8 divisors (see below), whose sum is σ = 1159264. Its totient is φ = 562320.

The previous prime is 856459. The next prime is 856469. The reversal of 856461 is 164658.

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

It is not a de Polignac number, because 856461 - 2¹ = 856459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856469) 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, 1930 + ... + 2331.

It is an arithmetic number, because the mean of its divisors is an integer number (144908).

2⁸⁵⁶⁴⁶¹ is an apocalyptic number.

It is an amenable number.

856461 is a deficient number, since it is larger than the sum of its proper divisors (302803).

856461 is a wasteful number, since it uses less digits than its factorization.

856461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4331.

The product of its digits is 5760, while the sum is 30.

The square root of 856461 is about 925.4517815640. The cubic root of 856461 is about 94.9662299176.

The spelling of 856461 in words is "eight hundred fifty-six thousand, four hundred sixty-one".