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668529 = 32591259
BaseRepresentation
bin10100011001101110001
31020222001100
42203031301
5132343104
622155013
75453031
oct2431561
91228040
10668529
11417304
12282a69
131a53a4
141358c1
15d3139
hexa3371

668529 has 12 divisors (see below), whose sum is σ = 982800. Its totient is φ = 437784.

The previous prime is 668527. The next prime is 668531. The reversal of 668529 is 925866.

668529 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (668527) and next prime (668531).

It is not a de Polignac number, because 668529 - 21 = 668527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 668493 and 668502.

It is not an unprimeable number, because it can be changed into a prime (668527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99 + ... + 1160.

It is an arithmetic number, because the mean of its divisors is an integer number (81900).

2668529 is an apocalyptic number.

It is an amenable number.

668529 is a deficient number, since it is larger than the sum of its proper divisors (314271).

668529 is a wasteful number, since it uses less digits than its factorization.

668529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324 (or 1321 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 668529 is about 817.6362271817. The cubic root of 668529 is about 87.4393157462.

The spelling of 668529 in words is "six hundred sixty-eight thousand, five hundred twenty-nine".

Divisors: 1 3 9 59 177 531 1259 3777 11331 74281 222843 668529