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86900069 = 974332069
BaseRepresentation
bin1010010110111…
…11110101100101
320001111222111002
411023133311211
5134221300234
612342323045
72103431654
oct513376545
9201458432
1086900069
1145064343
1225129485
1315007c79
14b78119b
15796827e
hex52dfd65

86900069 has 8 divisors (see below), whose sum is σ = 88041240. Its totient is φ = 85764096.

The previous prime is 86900057. The next prime is 86900071. The reversal of 86900069 is 96000968.

It can be written as a sum of positive squares in 4 ways, for example, as 168100 + 86731969 = 410^2 + 9313^2 .

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 86900069 - 216 = 86834533 is a prime.

It is a super-2 number, since 2×869000692 = 15103243984409522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86900089) 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, 40967 + ... + 43035.

It is an arithmetic number, because the mean of its divisors is an integer number (11005155).

Almost surely, 286900069 is an apocalyptic number.

It is an amenable number.

86900069 is a deficient number, since it is larger than the sum of its proper divisors (1141171).

86900069 is a wasteful number, since it uses less digits than its factorization.

86900069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2599.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 86900069 is about 9322.0206500522. The cubic root of 86900069 is about 442.9350423740.

The spelling of 86900069 in words is "eighty-six million, nine hundred thousand, sixty-nine".

Divisors: 1 97 433 2069 42001 200693 895877 86900069