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10680785 = 52136157
BaseRepresentation
bin101000101111…
…100111010001
3202002122021122
4220233213101
510213241120
61020532025
7156533213
oct50574721
922078248
1010680785
1160356a5
1236b1015
13229c6bb
1415c05b3
15e0ea25
hexa2f9d1

10680785 has 4 divisors (see below), whose sum is σ = 12816948. Its totient is φ = 8544624.

The previous prime is 10680781. The next prime is 10680821. The reversal of 10680785 is 58708601.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58708601 = 78386943.

It can be written as a sum of positive squares in 2 ways, for example, as 3748096 + 6932689 = 1936^2 + 2633^2 .

It is a cyclic number.

It is not a de Polignac number, because 10680785 - 22 = 10680781 is a prime.

It is a super-2 number, since 2×106807852 = 228158336432450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10680781) 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 3 ways as a sum of consecutive naturals, for example, 1068074 + ... + 1068083.

It is an arithmetic number, because the mean of its divisors is an integer number (3204237).

Almost surely, 210680785 is an apocalyptic number.

It is an amenable number.

10680785 is a deficient number, since it is larger than the sum of its proper divisors (2136163).

10680785 is an equidigital number, since it uses as much as digits as its factorization.

10680785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2136162.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 10680785 is about 3268.1470285163. The cubic root of 10680785 is about 220.2255606701.

The spelling of 10680785 in words is "ten million, six hundred eighty thousand, seven hundred eighty-five".

Divisors: 1 5 2136157 10680785