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8000071 is a prime number
BaseRepresentation
bin11110100001001001000111
3120001110000221
4132201021013
54022000241
6443245211
7124666552
oct36411107
916043027
108000071
114574632
122819807
131871491
1410c3699
15a805d1
hex7a1247

8000071 has 2 divisors, whose sum is σ = 8000072. Its totient is φ = 8000070.

The previous prime is 8000063. The next prime is 8000087. The reversal of 8000071 is 1700008.

It is an a-pointer prime, because the next prime (8000087) can be obtained adding 8000071 to its sum of digits (16).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8000071 - 23 = 8000063 is a prime.

It is a super-2 number, since 2×80000712 = 128002272010082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8000051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4000035 + 4000036.

It is an arithmetic number, because the mean of its divisors is an integer number (4000036).

Almost surely, 28000071 is an apocalyptic number.

8000071 is a deficient number, since it is larger than the sum of its proper divisors (1).

8000071 is an equidigital number, since it uses as much as digits as its factorization.

8000071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 8000071 is about 2828.4396758637. The cubic root of 8000071 is about 200.0005916649. Note that the first 3 decimals are identical.

Adding to 8000071 its reverse (1700008), we get a palindrome (9700079).

It can be divided in two parts, 800007 and 1, that added together give a palindrome (800008).

The spelling of 8000071 in words is "eight million, seventy-one", and thus it is an aban number and an uban number.