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68811064 = 23710131213
BaseRepresentation
bin1000001100111…
…11100100111000
311210110222000221
410012133210320
5120103423224
610454505424
71463612230
oct406374470
9153428027
1068811064
1135929853
121b065274
131134360a
1491d2cc0
1560936e4
hex419f938

68811064 has 32 divisors (see below), whose sum is σ = 147719520. Its totient is φ = 29437056.

The previous prime is 68811023. The next prime is 68811073. The reversal of 68811064 is 46011886.

It is a congruent number.

It is an unprimeable number.

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, 56122 + ... + 57334.

It is an arithmetic number, because the mean of its divisors is an integer number (4616235).

Almost surely, 268811064 is an apocalyptic number.

It is an amenable number.

68811064 is an abundant number, since it is smaller than the sum of its proper divisors (78908456).

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

68811064 is a wasteful number, since it uses less digits than its factorization.

68811064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2239 (or 2235 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 68811064 is about 8295.2434563429. The cubic root of 68811064 is about 409.7818867641.

The spelling of 68811064 in words is "sixty-eight million, eight hundred eleven thousand, sixty-four".

Divisors: 1 2 4 7 8 14 28 56 1013 1213 2026 2426 4052 4852 7091 8104 8491 9704 14182 16982 28364 33964 56728 67928 1228769 2457538 4915076 8601383 9830152 17202766 34405532 68811064