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65704105 = 513140821
BaseRepresentation
bin1111101010100…
…1000010101001
311120122010002101
43322221002221
5113310012410
610304133401
71425322105
oct372510251
9146563071
1065704105
11340a7515
121a007261
13107c638c
148a24905
155b7cd3a
hex3ea90a9

65704105 has 4 divisors (see below), whose sum is σ = 78844932. Its totient is φ = 52563280.

The previous prime is 65704091. The next prime is 65704117. The reversal of 65704105 is 50140756.

65704105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52359696 + 13344409 = 7236^2 + 3653^2 .

It is not a de Polignac number, because 65704105 - 27 = 65703977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6570406 + ... + 6570415.

It is an arithmetic number, because the mean of its divisors is an integer number (19711233).

Almost surely, 265704105 is an apocalyptic number.

It is an amenable number.

65704105 is a deficient number, since it is larger than the sum of its proper divisors (13140827).

65704105 is a wasteful number, since it uses less digits than its factorization.

65704105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13140826.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 65704105 is about 8105.8068691525. The cubic root of 65704105 is about 403.5191666174.

The spelling of 65704105 in words is "sixty-five million, seven hundred four thousand, one hundred five".

Divisors: 1 5 13140821 65704105