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85104685 = 517020937
BaseRepresentation
bin1010001001010…
…01100000101101
312221010202200101
411010221200231
5133241322220
612240031101
72052243421
oct504514055
9187122611
1085104685
1144048456
1224602491
1314829a03
14b434b81
15771130a
hex512982d

85104685 has 4 divisors (see below), whose sum is σ = 102125628. Its totient is φ = 68083744.

The previous prime is 85104683. The next prime is 85104713. The reversal of 85104685 is 58640158.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15515721 + 69588964 = 3939^2 + 8342^2 .

It is a cyclic number.

It is not a de Polignac number, because 85104685 - 21 = 85104683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85104683) 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 3 ways as a sum of consecutive naturals, for example, 8510464 + ... + 8510473.

It is an arithmetic number, because the mean of its divisors is an integer number (25531407).

Almost surely, 285104685 is an apocalyptic number.

It is an amenable number.

85104685 is a deficient number, since it is larger than the sum of its proper divisors (17020943).

85104685 is a wasteful number, since it uses less digits than its factorization.

85104685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17020942.

The product of its (nonzero) digits is 38400, while the sum is 37.

The square root of 85104685 is about 9225.2200515760. The cubic root of 85104685 is about 439.8633959547.

The spelling of 85104685 in words is "eighty-five million, one hundred four thousand, six hundred eighty-five".

Divisors: 1 5 17020937 85104685