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680231 = 4147353
BaseRepresentation
bin10100110000100100111
31021120002202
42212010213
5133231411
622325115
75532116
oct2460447
91246082
10680231
11425082
1228979b
131aa806
14139c7d
15d683b
hexa6127

680231 has 8 divisors (see below), whose sum is σ = 713664. Its totient is φ = 647680.

The previous prime is 680213. The next prime is 680237. The reversal of 680231 is 132086.

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 680231 - 210 = 679207 is a prime.

It is a super-2 number, since 2×6802312 = 925428426722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680237) 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, 1751 + ... + 2103.

It is an arithmetic number, because the mean of its divisors is an integer number (89208).

2680231 is an apocalyptic number.

680231 is a deficient number, since it is larger than the sum of its proper divisors (33433).

680231 is a wasteful number, since it uses less digits than its factorization.

680231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 680231 is about 824.7611775538. The cubic root of 680231 is about 87.9465498419.

It can be divided in two parts, 680 and 231, that multiplied together give a triangular number (157080 = T560).

The spelling of 680231 in words is "six hundred eighty thousand, two hundred thirty-one".

Divisors: 1 41 47 353 1927 14473 16591 680231