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68471161 = 11231272131
BaseRepresentation
bin1000001010011…
…00100101111001
311202211200202221
410011030211321
5120012034121
610443324041
71460665243
oct405144571
9152750687
1068471161
1135717440
121ab20621
13112549a5
149145093
156027b41
hex414c979

68471161 has 16 divisors (see below), whose sum is σ = 78594048. Its totient is φ = 59043600.

The previous prime is 68471159. The next prime is 68471167. The reversal of 68471161 is 16117486.

It is not a de Polignac number, because 68471161 - 21 = 68471159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68471167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31066 + ... + 33196.

It is an arithmetic number, because the mean of its divisors is an integer number (4912128).

Almost surely, 268471161 is an apocalyptic number.

It is an amenable number.

68471161 is a deficient number, since it is larger than the sum of its proper divisors (10122887).

68471161 is a wasteful number, since it uses less digits than its factorization.

68471161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2292.

The product of its digits is 8064, while the sum is 34.

The square root of 68471161 is about 8274.7302675072. The cubic root of 68471161 is about 409.1060455170.

It can be divided in two parts, 6847 and 1161, that added together give a palindrome (8008).

The spelling of 68471161 in words is "sixty-eight million, four hundred seventy-one thousand, one hundred sixty-one".

Divisors: 1 11 23 127 253 1397 2131 2921 23441 32131 49013 270637 539143 2977007 6224651 68471161