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71007007 = 97773947
BaseRepresentation
bin1000011101101…
…11101100011111
311221121112022011
410032313230133
5121134211012
611013532051
71521356341
oct416675437
9157545264
1071007007
1137099685
121b944027
1311931ca6
149605291
1563791a7
hex43b7b1f

71007007 has 8 divisors (see below), whose sum is σ = 71907696. Its totient is φ = 70109952.

The previous prime is 71006987. The next prime is 71007037. The reversal of 71007007 is 70070017.

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

It is a cyclic number.

It is not a de Polignac number, because 71007007 - 27 = 71006879 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 (71007037) 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, 74508 + ... + 75454.

It is an arithmetic number, because the mean of its divisors is an integer number (8988462).

Almost surely, 271007007 is an apocalyptic number.

71007007 is a deficient number, since it is larger than the sum of its proper divisors (900689).

71007007 is an equidigital number, since it uses as much as digits as its factorization.

71007007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1817.

The product of its (nonzero) digits is 343, while the sum is 22.

The square root of 71007007 is about 8426.5655518722. The cubic root of 71007007 is about 414.0953964238.

The spelling of 71007007 in words is "seventy-one million, seven thousand, seven".

Divisors: 1 97 773 947 74981 91859 732031 71007007