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68805716 = 2272457347
BaseRepresentation
bin1000001100111…
…10010001010100
311210110200200212
410012132101110
5120103240331
610454424552
71463560520
oct406362124
9153420625
1068805716
1135925831
121b062158
1311341055
1491d0d80
156091d2b
hex419e454

68805716 has 12 divisors (see below), whose sum is σ = 137611488. Its totient is φ = 29488152.

The previous prime is 68805703. The next prime is 68805727. The reversal of 68805716 is 61750886.

68805716 is an admirable number.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1228646 + ... + 1228701.

It is an arithmetic number, because the mean of its divisors is an integer number (11467624).

Almost surely, 268805716 is an apocalyptic number.

It is an amenable number.

68805716 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

68805716 is a wasteful number, since it uses less digits than its factorization.

68805716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2457358 (or 2457356 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 68805716 is about 8294.9210966711. The cubic root of 68805716 is about 409.7712703981.

The spelling of 68805716 in words is "sixty-eight million, eight hundred five thousand, seven hundred sixteen".

Divisors: 1 2 4 7 14 28 2457347 4914694 9829388 17201429 34402858 68805716