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10680865 = 513164321
BaseRepresentation
bin101000101111…
…101000100001
3202002122101121
4220233220201
510213241430
61020532241
7156533356
oct50575041
922078347
1010680865
116035768
1236b1081
13229c750
1415c062d
15e0ea7a
hexa2fa21

10680865 has 8 divisors (see below), whose sum is σ = 13803048. Its totient is φ = 7887360.

The previous prime is 10680841. The next prime is 10680871. The reversal of 10680865 is 56808601.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 331776 + 10349089 = 576^2 + 3217^2 .

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

It is not a de Polignac number, because 10680865 - 27 = 10680737 is a prime.

It is a super-2 number, since 2×106808652 = 228161754296450, which contains 22 as substring.

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 10680865.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 82096 + ... + 82225.

It is an arithmetic number, because the mean of its divisors is an integer number (1725381).

Almost surely, 210680865 is an apocalyptic number.

It is an amenable number.

10680865 is a deficient number, since it is larger than the sum of its proper divisors (3122183).

10680865 is a wasteful number, since it uses less digits than its factorization.

10680865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164339.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 10680865 is about 3268.1592678448. The cubic root of 10680865 is about 220.2261105049.

The spelling of 10680865 in words is "ten million, six hundred eighty thousand, eight hundred sixty-five".

Divisors: 1 5 13 65 164321 821605 2136173 10680865