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102065065 = 529703897
BaseRepresentation
bin1100001010101…
…10001110101001
321010001102221121
412011112032221
5202112040230
614043335241
72346352534
oct605261651
9233042847
10102065065
1152681aa3
122a221521
13181b773b
14d7aba1b
158e6177a
hex61563a9

102065065 has 8 divisors (see below), whose sum is σ = 126701640. Its totient is φ = 78836352.

The previous prime is 102065063. The next prime is 102065081. The reversal of 102065065 is 560560201.

It can be written as a sum of positive squares in 4 ways, for example, as 2005056 + 100060009 = 1416^2 + 10003^2 .

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 102065065 - 21 = 102065063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102065063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 351804 + ... + 352093.

It is an arithmetic number, because the mean of its divisors is an integer number (15837705).

Almost surely, 2102065065 is an apocalyptic number.

It is an amenable number.

102065065 is a deficient number, since it is larger than the sum of its proper divisors (24636575).

102065065 is an equidigital number, since it uses as much as digits as its factorization.

102065065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703931.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 102065065 is about 10102.7256223259. The cubic root of 102065065 is about 467.3321997802.

The spelling of 102065065 in words is "one hundred two million, sixty-five thousand, sixty-five".

Divisors: 1 5 29 145 703897 3519485 20413013 102065065