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680146168 = 23136539867
BaseRepresentation
bin101000100010100…
…011010011111000
31202101211000010211
4220202203103320
52343104134133
6151253520504
722566101302
oct5042432370
91671730124
10680146168
11319a19979
1216b943134
13aabaa670
146648a972
153ea9ebcd
hex288a34f8

680146168 has 16 divisors (see below), whose sum is σ = 1373372280. Its totient is φ = 313913568.

The previous prime is 680146163. The next prime is 680146237. The reversal of 680146168 is 861641086.

It is a self number, because there is not a number n which added to its sum of digits gives 680146168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680146163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3269830 + ... + 3270037.

Almost surely, 2680146168 is an apocalyptic number.

It is an amenable number.

680146168 is an abundant number, since it is smaller than the sum of its proper divisors (693226112).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

680146168 is a wasteful number, since it uses less digits than its factorization.

680146168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6539886 (or 6539882 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 680146168 is about 26079.6121136799. The cubic root of 680146168 is about 879.4289373490.

The spelling of 680146168 in words is "six hundred eighty million, one hundred forty-six thousand, one hundred sixty-eight".

Divisors: 1 2 4 8 13 26 52 104 6539867 13079734 26159468 52318936 85018271 170036542 340073084 680146168