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680202068 = 227131868687
BaseRepresentation
bin101000100010110…
…000111101010100
31202101220211211012
4220202300331110
52343112431233
6151255031352
722566423260
oct5042607524
91671824735
10680202068
11319a57977
1216b96b558
13aabc9c40
14664a30a0
153eab1548
hex288b0f54

680202068 has 24 divisors (see below), whose sum is σ = 1465051392. Its totient is φ = 269090784.

The previous prime is 680202067. The next prime is 680202119. The reversal of 680202068 is 860202086.

It is a happy number.

It is a super-3 number, since 3×6802020683 (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680202067) 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 7 ways as a sum of consecutive naturals, for example, 933980 + ... + 934707.

It is an arithmetic number, because the mean of its divisors is an integer number (61043808).

Almost surely, 2680202068 is an apocalyptic number.

It is an amenable number.

680202068 is an abundant number, since it is smaller than the sum of its proper divisors (784849324).

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

680202068 is a wasteful number, since it uses less digits than its factorization.

680202068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1868711 (or 1868709 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 680202068 is about 26080.6838100538. The cubic root of 680202068 is about 879.4530295873.

The spelling of 680202068 in words is "six hundred eighty million, two hundred two thousand, sixty-eight".

Divisors: 1 2 4 7 13 14 26 28 52 91 182 364 1868687 3737374 7474748 13080809 24292931 26161618 48585862 52323236 97171724 170050517 340101034 680202068