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8690087 = 719223293
BaseRepresentation
bin100001001001…
…100110100111
3121100111120002
4201021212213
54211040322
6510131515
7133602350
oct41114647
917314502
108690087
1149a5a9a
122ab0b9b
131a53583
141222d27
15b69c92
hex8499a7

8690087 has 16 divisors (see below), whose sum is σ = 10536960. Its totient is φ = 7000992.

The previous prime is 8690069. The next prime is 8690089. The reversal of 8690087 is 7800968.

It is a cyclic number.

It is not a de Polignac number, because 8690087 - 210 = 8689063 is a prime.

It is a super-2 number, since 2×86900872 = 151035224135138, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 8690087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8690089) 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 15 ways as a sum of consecutive naturals, for example, 29513 + ... + 29805.

It is an arithmetic number, because the mean of its divisors is an integer number (658560).

Almost surely, 28690087 is an apocalyptic number.

8690087 is a deficient number, since it is larger than the sum of its proper divisors (1846873).

8690087 is a wasteful number, since it uses less digits than its factorization.

8690087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 8690087 is about 2947.8953509241. The cubic root of 8690087 is about 205.5928663490.

The spelling of 8690087 in words is "eight million, six hundred ninety thousand, eighty-seven".

Divisors: 1 7 19 133 223 293 1561 2051 4237 5567 29659 38969 65339 457373 1241441 8690087