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69108005 = 573189337
BaseRepresentation
bin1000001111010…
…00000100100101
311211001001100202
410013220010211
5120142424010
610505120245
71466260031
oct407500445
9154031322
1069108005
113601195a
121b189085
1311418815
14926d1c1
1561016a5
hex41e8125

69108005 has 8 divisors (see below), whose sum is σ = 84066072. Its totient is φ = 54528768.

The previous prime is 69107999. The next prime is 69108029. The reversal of 69108005 is 50080196.

It can be written as a sum of positive squares in 4 ways, for example, as 3319684 + 65788321 = 1822^2 + 8111^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-69108005 is a prime.

It is a Duffinian number.

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, 94304 + ... + 95033.

It is an arithmetic number, because the mean of its divisors is an integer number (10508259).

Almost surely, 269108005 is an apocalyptic number.

It is an amenable number.

69108005 is a deficient number, since it is larger than the sum of its proper divisors (14958067).

69108005 is a wasteful number, since it uses less digits than its factorization.

69108005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189415.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 69108005 is about 8313.1224578975. The cubic root of 69108005 is about 410.3704860588.

The spelling of 69108005 in words is "sixty-nine million, one hundred eight thousand, five".

Divisors: 1 5 73 365 189337 946685 13821601 69108005