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65075070 = 2352169169
BaseRepresentation
bin1111100000111…
…1011101111110
311112110011012210
43320033131332
5113124400240
610242441250
71420062144
oct370173576
9145404183
1065075070
1133807955
1219963226
1310635c78
1488dd594
155aa6780
hex3e0f77e

65075070 has 16 divisors (see below), whose sum is σ = 156180240. Its totient is φ = 17353344.

The previous prime is 65075063. The next prime is 65075081. The reversal of 65075070 is 7057056.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2169169 = 65075070 / (6 + 5 + 0 + 7 + 5 + 0 + 7 + 0).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1084555 + ... + 1084614.

It is an arithmetic number, because the mean of its divisors is an integer number (9761265).

Almost surely, 265075070 is an apocalyptic number.

65075070 is an abundant number, since it is smaller than the sum of its proper divisors (91105170).

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

65075070 is a wasteful number, since it uses less digits than its factorization.

65075070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2169179.

The product of its (nonzero) digits is 7350, while the sum is 30.

The square root of 65075070 is about 8066.9120486094. The cubic root of 65075070 is about 402.2273039400.

The spelling of 65075070 in words is "sixty-five million, seventy-five thousand, seventy".

Divisors: 1 2 3 5 6 10 15 30 2169169 4338338 6507507 10845845 13015014 21691690 32537535 65075070