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8000069 = 711107971
BaseRepresentation
bin11110100001001001000101
3120001110000212
4132201021011
54022000234
6443245205
7124666550
oct36411105
916043025
108000069
114574630
122819805
13187148c
1410c3697
15a805ce
hex7a1245

8000069 has 16 divisors (see below), whose sum is σ = 10077696. Its totient is φ = 6169200.

The previous prime is 8000063. The next prime is 8000071. The reversal of 8000069 is 9600008.

8000069 = 16322 + 16332 + 16342.

It is a cyclic number.

It is not a de Polignac number, because 8000069 - 24 = 8000053 is a prime.

It is a super-2 number, since 2×80000692 = 128002208009522, 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 (8000063) 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, 7754 + ... + 8724.

It is an arithmetic number, because the mean of its divisors is an integer number (629856).

Almost surely, 28000069 is an apocalyptic number.

It is an amenable number.

8000069 is a deficient number, since it is larger than the sum of its proper divisors (2077627).

8000069 is a wasteful number, since it uses less digits than its factorization.

8000069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 8000069 is about 2828.4393223119. The cubic root of 8000069 is about 200.0005749983. Note that the first 3 decimals are identical.

The spelling of 8000069 in words is "eight million, sixty-nine", and thus it is an aban number and an uban number.

Divisors: 1 7 11 77 107 749 971 1177 6797 8239 10681 74767 103897 727279 1142867 8000069