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65070005 = 57111313001
BaseRepresentation
bin1111100000111…
…0001110110101
311112102220021012
43320032032311
5113124220010
610242402005
71420041320
oct370161665
9145386235
1065070005
1133804070
1219960305
1310633880
1488db7b7
155aa5005
hex3e0e3b5

65070005 has 32 divisors (see below), whose sum is σ = 104848128. Its totient is φ = 37440000.

The previous prime is 65069987. The next prime is 65070007. The reversal of 65070005 is 50007056.

It is not a de Polignac number, because 65070005 - 212 = 65065909 is a prime.

It is a Smith number, since the sum of its digits (23) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 (65070007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1496 + ... + 11505.

It is an arithmetic number, because the mean of its divisors is an integer number (3276504).

Almost surely, 265070005 is an apocalyptic number.

65070005 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

65070005 is a deficient number, since it is larger than the sum of its proper divisors (39778123).

65070005 is a wasteful number, since it uses less digits than its factorization.

65070005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13037.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 65070005 is about 8066.5981057692. The cubic root of 65070005 is about 402.2168681251.

The spelling of 65070005 in words is "sixty-five million, seventy thousand, five".

Divisors: 1 5 7 11 13 35 55 65 77 91 143 385 455 715 1001 5005 13001 65005 91007 143011 169013 455035 715055 845065 1001077 1183091 1859143 5005385 5915455 9295715 13014001 65070005