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856607 = 978831
BaseRepresentation
bin11010001001000011111
31121112001012
43101020133
5204402412
630205435
710165253
oct3211037
91545035
10856607
11535644
1235387b
1323cb8b
14184263
1511dc22
hexd121f

856607 has 4 divisors (see below), whose sum is σ = 865536. Its totient is φ = 847680.

The previous prime is 856571. The next prime is 856627. The reversal of 856607 is 706658.

856607 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 706658 = 2353329.

It is a cyclic number.

It is not a de Polignac number, because 856607 - 28 = 856351 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 (856627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4319 + ... + 4512.

It is an arithmetic number, because the mean of its divisors is an integer number (216384).

2856607 is an apocalyptic number.

856607 is a deficient number, since it is larger than the sum of its proper divisors (8929).

856607 is an equidigital number, since it uses as much as digits as its factorization.

With its successor (856608) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (8928).

856607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8928.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 856607 is about 925.5306585954. The cubic root of 856607 is about 94.9716258752.

The spelling of 856607 in words is "eight hundred fifty-six thousand, six hundred seven".

Divisors: 1 97 8831 856607