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68601261 = 357739631
BaseRepresentation
bin1000001011011…
…00010110101101
311210002022020110
410011230112231
5120030220021
610450210233
71462046451
oct405542655
9153068213
1068601261
11357a6163
121ab83979
131129bc81
14917a661
156051476
hex416c5ad

68601261 has 8 divisors (see below), whose sum is σ = 91629184. Its totient is φ = 45653760.

The previous prime is 68601259. The next prime is 68601287. The reversal of 68601261 is 16210686.

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

It is not a de Polignac number, because 68601261 - 21 = 68601259 is a prime.

It is a super-2 number, since 2×686012612 = 9412266021580242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68601251) 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 7 ways as a sum of consecutive naturals, for example, 18085 + ... + 21546.

It is an arithmetic number, because the mean of its divisors is an integer number (11453648).

Almost surely, 268601261 is an apocalyptic number.

It is an amenable number.

68601261 is a deficient number, since it is larger than the sum of its proper divisors (23027923).

68601261 is a wasteful number, since it uses less digits than its factorization.

68601261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40211.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 68601261 is about 8282.5878202407. The cubic root of 68601261 is about 409.3649916245.

The spelling of 68601261 in words is "sixty-eight million, six hundred one thousand, two hundred sixty-one".

Divisors: 1 3 577 1731 39631 118893 22867087 68601261