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68793529 = 723894801
BaseRepresentation
bin1000001100110…
…11010010111001
311210110001222111
410012123102321
5120102343104
610454252321
71463510140
oct406332271
9153401874
1068793529
1135917662
121b0570a1
131133863c
1491ca757
15608d404
hex419b4b9

68793529 has 16 divisors (see below), whose sum is σ = 82978560. Its totient is φ = 55756800.

The previous prime is 68793457. The next prime is 68793551. The reversal of 68793529 is 92539786.

It is a cyclic number.

It is not a de Polignac number, because 68793529 - 27 = 68793401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68793559) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 11929 + ... + 16729.

It is an arithmetic number, because the mean of its divisors is an integer number (5186160).

Almost surely, 268793529 is an apocalyptic number.

It is an amenable number.

68793529 is a deficient number, since it is larger than the sum of its proper divisors (14185031).

68793529 is a wasteful number, since it uses less digits than its factorization.

68793529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4920.

The product of its digits is 816480, while the sum is 49.

The square root of 68793529 is about 8294.1864579957. The cubic root of 68793529 is about 409.7470758126.

The spelling of 68793529 in words is "sixty-eight million, seven hundred ninety-three thousand, five hundred twenty-nine".

Divisors: 1 7 23 89 161 623 2047 4801 14329 33607 110423 427289 772961 2991023 9827647 68793529