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13875065 = 55694877
BaseRepresentation
bin110100111011…
…011101111001
3222002221000022
4310323131321
512023000230
61213220225
7225636041
oct64733571
928087008
1013875065
1179175a6
124791675
132b4a5c9
141bb2721
1513411e5
hexd3b779

13875065 has 8 divisors (see below), whose sum is σ = 16682760. Its totient is φ = 11078272.

The previous prime is 13875047. The next prime is 13875101. The reversal of 13875065 is 56057831.

It can be written as a sum of positive squares in 4 ways, for example, as 6889 + 13868176 = 83^2 + 3724^2 .

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 13875065 - 210 = 13874041 is a prime.

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, 407 + ... + 5283.

It is an arithmetic number, because the mean of its divisors is an integer number (2085345).

Almost surely, 213875065 is an apocalyptic number.

It is an amenable number.

13875065 is a deficient number, since it is larger than the sum of its proper divisors (2807695).

13875065 is an equidigital number, since it uses as much as digits as its factorization.

13875065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5451.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 13875065 is about 3724.9248314563. The cubic root of 13875065 is about 240.2951519198.

The spelling of 13875065 in words is "thirteen million, eight hundred seventy-five thousand, sixty-five".

Divisors: 1 5 569 2845 4877 24385 2775013 13875065