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68074674 = 23131257337
BaseRepresentation
bin1000000111010…
…11110010110010
311202002112220020
410003223302302
5114411342144
610431024310
71454424303
oct403536262
9152075806
1068074674
1135476568
121a96b096
1311146395
1490807aa
155e9a419
hex40ebcb2

68074674 has 32 divisors (see below), whose sum is σ = 138131136. Its totient is φ = 22364160.

The previous prime is 68074661. The next prime is 68074679. The reversal of 68074674 is 47647086.

It is a super-2 number, since 2×680746742 = 9268322480412552, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68074679) 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, 201834 + ... + 202170.

It is an arithmetic number, because the mean of its divisors is an integer number (4316598).

Almost surely, 268074674 is an apocalyptic number.

68074674 is an abundant number, since it is smaller than the sum of its proper divisors (70056462).

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

68074674 is a wasteful number, since it uses less digits than its factorization.

68074674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730.

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 68074674 is about 8250.7377851923. The cubic root of 68074674 is about 408.3148641191.

The spelling of 68074674 in words is "sixty-eight million, seventy-four thousand, six hundred seventy-four".

Divisors: 1 2 3 6 131 257 262 337 393 514 674 771 786 1011 1542 2022 33667 44147 67334 86609 88294 101001 132441 173218 202002 259827 264882 519654 11345779 22691558 34037337 68074674