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68311108 = 2291918583
BaseRepresentation
bin1000001001001…
…01100001000100
311202112120020001
410010211201010
5114441423413
610440051044
71456430515
oct404454104
9152476201
1068311108
1135618168
121aa63a84
13111c9b98
149102a0c
155ee54dd
hex4125844

68311108 has 12 divisors (see below), whose sum is σ = 119680960. Its totient is φ = 34116552.

The previous prime is 68311093. The next prime is 68311109. The reversal of 68311108 is 80111386.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (68311109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5616 + ... + 12967.

Almost surely, 268311108 is an apocalyptic number.

It is an amenable number.

68311108 is a deficient number, since it is larger than the sum of its proper divisors (51369852).

68311108 is a wasteful number, since it uses less digits than its factorization.

68311108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19506 (or 19504 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 68311108 is about 8265.0534178552. The cubic root of 68311108 is about 408.7870317180.

The spelling of 68311108 in words is "sixty-eight million, three hundred eleven thousand, one hundred eight".

Divisors: 1 2 4 919 1838 3676 18583 37166 74332 17077777 34155554 68311108