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68864763 = 31129227317
BaseRepresentation
bin1000001101011…
…00101011111011
311210120200200210
410012230223323
5120112133023
610500002203
71464224622
oct406545373
9153520623
1068864763
1135966130
121b090363
1311361ba6
1492086b9
1560a4593
hex41acafb

68864763 has 32 divisors (see below), whose sum is σ = 104405760. Its totient is φ = 39992960.

The previous prime is 68864713. The next prime is 68864767. The reversal of 68864763 is 36746886.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 68864763 - 212 = 68860667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68864767) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217081 + ... + 217397.

It is an arithmetic number, because the mean of its divisors is an integer number (3262680).

Almost surely, 268864763 is an apocalyptic number.

68864763 is a deficient number, since it is larger than the sum of its proper divisors (35540997).

68864763 is a wasteful number, since it uses less digits than its factorization.

68864763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587.

The product of its digits is 1161216, while the sum is 48.

The square root of 68864763 is about 8298.4795595338. The cubic root of 68864763 is about 409.8884546843. Note that the first 3 decimals are identical.

The spelling of 68864763 in words is "sixty-eight million, eight hundred sixty-four thousand, seven hundred sixty-three".

Divisors: 1 3 11 29 33 87 227 317 319 681 951 957 2497 3487 6583 7491 9193 10461 19749 27579 71959 72413 101123 215877 217239 303369 791549 2086811 2374647 6260433 22954921 68864763