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65070085 = 5311972131
BaseRepresentation
bin1111100000111…
…0010000000101
311112102220101011
43320032100011
5113124220320
610242402221
71420041463
oct370162005
9145386334
1065070085
1133804133
1219960371
1310633912
1488db833
155aa505a
hex3e0e405

65070085 has 16 divisors (see below), whose sum is σ = 81050112. Its totient is φ = 50097600.

The previous prime is 65070077. The next prime is 65070107. The reversal of 65070085 is 58007056.

It is not a de Polignac number, because 65070085 - 23 = 65070077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 29470 + ... + 31600.

It is an arithmetic number, because the mean of its divisors is an integer number (5065632).

Almost surely, 265070085 is an apocalyptic number.

It is an amenable number.

65070085 is a deficient number, since it is larger than the sum of its proper divisors (15980027).

65070085 is a wasteful number, since it uses less digits than its factorization.

65070085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2364.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 65070085 is about 8066.6030644876. The cubic root of 65070085 is about 402.2170329596.

The spelling of 65070085 in words is "sixty-five million, seventy thousand, eighty-five".

Divisors: 1 5 31 155 197 985 2131 6107 10655 30535 66061 330305 419807 2099035 13014017 65070085