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8868681 = 327113879
BaseRepresentation
bin100001110101…
…001101001001
3121200120112200
4201311031021
54232244211
6514030413
7135245133
oct41651511
917616480
108868681
115008198
122b78409
131ab6953
14126c053
15ba2b56
hex875349

8868681 has 12 divisors (see below), whose sum is σ = 12991680. Its totient is φ = 5828760.

The previous prime is 8868653. The next prime is 8868689. The reversal of 8868681 is 1868688.

It is a happy number.

8868681 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8868681 - 27 = 8868553 is a prime.

It is a super-2 number, since 2×88686812 = 157307005359522, which contains 22 as substring.

8868681 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8868689) 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 in 11 ways as a sum of consecutive naturals, for example, 6301 + ... + 7578.

It is an arithmetic number, because the mean of its divisors is an integer number (1082640).

Almost surely, 28868681 is an apocalyptic number.

It is an amenable number.

8868681 is a deficient number, since it is larger than the sum of its proper divisors (4122999).

8868681 is a wasteful number, since it uses less digits than its factorization.

8868681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13956 (or 13953 counting only the distinct ones).

The product of its digits is 147456, while the sum is 45.

The square root of 8868681 is about 2978.0330757062. The cubic root of 8868681 is about 206.9917381006.

The spelling of 8868681 in words is "eight million, eight hundred sixty-eight thousand, six hundred eighty-one".

Divisors: 1 3 9 71 213 639 13879 41637 124911 985409 2956227 8868681