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71060061 = 323686687
BaseRepresentation
bin1000011110001…
…00101001011101
311221201020002010
410033010221131
5121142410221
611015021433
71522000122
oct417045135
9157636063
1071060061
1137125526
121b96a879
1311950197
14961a749
156389c76
hex43c4a5d

71060061 has 4 divisors (see below), whose sum is σ = 94746752. Its totient is φ = 47373372.

The previous prime is 71060053. The next prime is 71060081. The reversal of 71060061 is 16006017.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16006017 = 35335339.

It is not a de Polignac number, because 71060061 - 23 = 71060053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71060021) 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 3 ways as a sum of consecutive naturals, for example, 11843341 + ... + 11843346.

It is an arithmetic number, because the mean of its divisors is an integer number (23686688).

Almost surely, 271060061 is an apocalyptic number.

It is an amenable number.

71060061 is a deficient number, since it is larger than the sum of its proper divisors (23686691).

71060061 is a wasteful number, since it uses less digits than its factorization.

71060061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23686690.

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 71060061 is about 8429.7129844378. The cubic root of 71060061 is about 414.1985033741.

Adding to 71060061 its reverse (16006017), we get a palindrome (87066078).

The spelling of 71060061 in words is "seventy-one million, sixty thousand, sixty-one".

Divisors: 1 3 23686687 71060061