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85660068 = 223133117713
BaseRepresentation
bin1010001101100…
…01000110100100
312222011222112010
411012301012210
5133412110233
612255554220
72060045544
oct506610644
9188158463
1085660068
114439774a
122482b970
1314992740
14b53b324
1577c0b63
hex51b11a4

85660068 has 48 divisors (see below), whose sum is σ = 222204416. Its totient is φ = 25505280.

The previous prime is 85660063. The next prime is 85660109. The reversal of 85660068 is 86006658.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (85660063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4021 + ... + 13692.

Almost surely, 285660068 is an apocalyptic number.

It is an amenable number.

85660068 is an abundant number, since it is smaller than the sum of its proper divisors (136544348).

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

85660068 is a wasteful number, since it uses less digits than its factorization.

85660068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17764 (or 17762 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 85660068 is about 9255.2724433158. The cubic root of 85660068 is about 440.8181540564.

The spelling of 85660068 in words is "eighty-five million, six hundred sixty thousand, sixty-eight".

Divisors: 1 2 3 4 6 12 13 26 31 39 52 62 78 93 124 156 186 372 403 806 1209 1612 2418 4836 17713 35426 53139 70852 106278 212556 230269 460538 549103 690807 921076 1098206 1381614 1647309 2196412 2763228 3294618 6589236 7138339 14276678 21415017 28553356 42830034 85660068