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680236 = 22173983
BaseRepresentation
bin10100110000100101100
31021120002221
42212010230
5133231421
622325124
75532124
oct2460454
91246087
10680236
11425087
122897a4
131aa80b
14139c84
15d6841
hexa612c

680236 has 12 divisors (see below), whose sum is σ = 1198512. Its totient is φ = 337808.

The previous prime is 680213. The next prime is 680237. The reversal of 680236 is 632086.

It is a self number, because there is not a number n which added to its sum of digits gives 680236.

It is not an unprimeable number, because it can be changed into a prime (680237) by changing a digit.

680236 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201 + ... + 1183.

It is an arithmetic number, because the mean of its divisors is an integer number (99876).

2680236 is an apocalyptic number.

It is an amenable number.

680236 is a deficient number, since it is larger than the sum of its proper divisors (518276).

680236 is a wasteful number, since it uses less digits than its factorization.

680236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160 (or 1158 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 680236 is about 824.7642087288. The cubic root of 680236 is about 87.9467653234.

The spelling of 680236 in words is "six hundred eighty thousand, two hundred thirty-six".

Divisors: 1 2 4 173 346 692 983 1966 3932 170059 340118 680236