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83068609 = 138817253
BaseRepresentation
bin1001111001110…
…00011011000001
312210022022201011
410330320123001
5132231143414
612124240521
72026033351
oct474703301
9183268634
1083068609
1142987748
12239a0141
1314296030
14b064b61
15745cdc4
hex4f386c1

83068609 has 8 divisors (see below), whose sum is σ = 89572392. Its totient is φ = 76581120.

The previous prime is 83068597. The next prime is 83068619. The reversal of 83068609 is 90686038.

It can be written as a sum of positive squares in 4 ways, for example, as 1617984 + 81450625 = 1272^2 + 9025^2 .

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 83068609 - 27 = 83068481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83068619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7827 + ... + 15079.

It is an arithmetic number, because the mean of its divisors is an integer number (11196549).

Almost surely, 283068609 is an apocalyptic number.

It is an amenable number.

83068609 is a deficient number, since it is larger than the sum of its proper divisors (6503783).

83068609 is a wasteful number, since it uses less digits than its factorization.

83068609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8147.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 83068609 is about 9114.1982093874. The cubic root of 83068609 is about 436.3272257327.

The spelling of 83068609 in words is "eighty-three million, sixty-eight thousand, six hundred nine".

Divisors: 1 13 881 7253 11453 94289 6389893 83068609