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65705672060 = 2257469326229
BaseRepresentation
bin111101001100010111…
…001111110101111100
320021121010210222101122
4331030113033311330
52034031123001220
650103524330112
74514150666060
oct751427176574
9207533728348
1065705672060
1125958158a16
1210898843938
136271862ac2
143274567aa0
151a985ec425
hexf4c5cfd7c

65705672060 has 24 divisors (see below), whose sum is σ = 157693613280. Its totient is φ = 22527658944.

The previous prime is 65705672059. The next prime is 65705672069. The reversal of 65705672060 is 6027650756.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65705672069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234662975 + ... + 234663254.

It is an arithmetic number, because the mean of its divisors is an integer number (6570567220).

Almost surely, 265705672060 is an apocalyptic number.

It is an amenable number.

65705672060 is an abundant number, since it is smaller than the sum of its proper divisors (91987941220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65705672060 is a wasteful number, since it uses less digits than its factorization.

65705672060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469326245 (or 469326243 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 44.

The spelling of 65705672060 in words is "sixty-five billion, seven hundred five million, six hundred seventy-two thousand, sixty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 469326229 938652458 1877304916 2346631145 3285283603 4693262290 6570567206 9386524580 13141134412 16426418015 32852836030 65705672060