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68529682 = 2132635757
BaseRepresentation
bin1000001010110…
…10111000010010
311202221200001101
410011122320102
5120020422212
610444455014
71461330664
oct405327022
9152850041
1068529682
1135757401
121ab4a46a
1311275510
14915c534
15603a157
hex415ae12

68529682 has 8 divisors (see below), whose sum is σ = 110701836. Its totient is φ = 31629072.

The previous prime is 68529649. The next prime is 68529683. The reversal of 68529682 is 28692586.

It can be written as a sum of positive squares in 2 ways, for example, as 49266361 + 19263321 = 7019^2 + 4389^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×685296822 = 9392634630042248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68529683) by changing a digit.

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, 1317853 + ... + 1317904.

Almost surely, 268529682 is an apocalyptic number.

68529682 is a deficient number, since it is larger than the sum of its proper divisors (42172154).

68529682 is a wasteful number, since it uses less digits than its factorization.

68529682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2635772.

The product of its digits is 414720, while the sum is 46.

The square root of 68529682 is about 8278.2656396132. The cubic root of 68529682 is about 409.2225640486. Note that the first 3 decimals are identical.

The spelling of 68529682 in words is "sixty-eight million, five hundred twenty-nine thousand, six hundred eighty-two".

Divisors: 1 2 13 26 2635757 5271514 34264841 68529682