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68412911 = 7107241379
BaseRepresentation
bin1000001001111…
…10010111101111
311202201201212112
410010332113233
5120003203121
610442154235
71460333360
oct404762757
9152651775
1068412911
11356876a6
121aab297b
1311234318
14912bb67
15601575b
hex413e5ef

68412911 has 16 divisors (see below), whose sum is σ = 79453440. Its totient is φ = 57697920.

The previous prime is 68412809. The next prime is 68412917. The reversal of 68412911 is 11921486.

It is not a de Polignac number, because 68412911 - 210 = 68411887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68412917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180320 + ... + 180698.

It is an arithmetic number, because the mean of its divisors is an integer number (4965840).

Almost surely, 268412911 is an apocalyptic number.

68412911 is a deficient number, since it is larger than the sum of its proper divisors (11040529).

68412911 is a wasteful number, since it uses less digits than its factorization.

68412911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734.

The product of its digits is 3456, while the sum is 32.

The square root of 68412911 is about 8271.2097664126. The cubic root of 68412911 is about 408.9900006124.

The spelling of 68412911 in words is "sixty-eight million, four hundred twelve thousand, nine hundred eleven".

Divisors: 1 7 107 241 379 749 1687 2653 25787 40553 91339 180509 283871 639373 9773273 68412911