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65065015 = 521161673
BaseRepresentation
bin1111100000110…
…1000000110111
311112102122102101
43320031000313
5113124040030
610242322531
71420020631
oct370150067
9145378371
1065065015
1133800344
1219959447
1310631512
1488d9a51
155aa37ca
hex3e0d037

65065015 has 8 divisors (see below), whose sum is σ = 78449328. Its totient is φ = 51804480.

The previous prime is 65065003. The next prime is 65065019. The reversal of 65065015 is 51056056.

65065015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65065015 - 25 = 65064983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65065019) 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, 29782 + ... + 31891.

It is an arithmetic number, because the mean of its divisors is an integer number (9806166).

Almost surely, 265065015 is an apocalyptic number.

65065015 is a deficient number, since it is larger than the sum of its proper divisors (13384313).

65065015 is a wasteful number, since it uses less digits than its factorization.

65065015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61889.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 65065015 is about 8066.2887996897. The cubic root of 65065015 is about 402.2065863090.

The spelling of 65065015 in words is "sixty-five million, sixty-five thousand, fifteen".

Divisors: 1 5 211 1055 61673 308365 13013003 65065015