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85130687 = 592775209
BaseRepresentation
bin1010001001011…
…11110110111111
312221012002100102
411010233312333
5133243140222
612240351315
72052412265
oct504576677
9187162312
1085130687
1144065a44
122461553b
13148387b5
14b440435
157718d92
hex512fdbf

85130687 has 8 divisors (see below), whose sum is σ = 86902800. Its totient is φ = 83369664.

The previous prime is 85130671. The next prime is 85130707. The reversal of 85130687 is 78603158.

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

It is a cyclic number.

It is not a de Polignac number, because 85130687 - 24 = 85130671 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85130687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85130627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13739 + ... + 18947.

It is an arithmetic number, because the mean of its divisors is an integer number (10862850).

Almost surely, 285130687 is an apocalyptic number.

85130687 is a deficient number, since it is larger than the sum of its proper divisors (1772113).

85130687 is a wasteful number, since it uses less digits than its factorization.

85130687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5545.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 85130687 is about 9226.6292328239. The cubic root of 85130687 is about 439.9081884883.

The spelling of 85130687 in words is "eighty-five million, one hundred thirty thousand, six hundred eighty-seven".

Divisors: 1 59 277 5209 16343 307331 1442893 85130687