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61710068 = 22717129643
BaseRepresentation
bin1110101101100…
…1111011110100
311022010012022002
43223121323310
5111244210233
610042354432
71346345510
oct353317364
9138105262
1061710068
1131919762
12187bba18
13ca28444
1482a5140
15563e6e8
hex3ad9ef4

61710068 has 24 divisors (see below), whose sum is σ = 130681152. Its totient is φ = 24891264.

The previous prime is 61710067. The next prime is 61710083. The reversal of 61710068 is 86001716.

It is a self number, because there is not a number n which added to its sum of digits gives 61710068.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61710067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64346 + ... + 65297.

It is an arithmetic number, because the mean of its divisors is an integer number (5445048).

Almost surely, 261710068 is an apocalyptic number.

61710068 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

61710068 is an abundant number, since it is smaller than the sum of its proper divisors (68971084).

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

61710068 is a wasteful number, since it uses less digits than its factorization.

61710068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129671 (or 129669 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 61710068 is about 7855.5755995344. The cubic root of 61710068 is about 395.1712508522.

The spelling of 61710068 in words is "sixty-one million, seven hundred ten thousand, sixty-eight".

Divisors: 1 2 4 7 14 17 28 34 68 119 238 476 129643 259286 518572 907501 1815002 2203931 3630004 4407862 8815724 15427517 30855034 61710068